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Seyfullah L.J.; Roberts E.A.; Schmidt A.R.; Ragazzi E.; Anderson K.B.; Rodrigues Do Nascimento D., Jr.; Ferreira Da Silva Filho W.; Kunzmann L.

Seyfullah, Leyla J. (26428479500); Roberts, Emily A. (57211944832); Schmidt, Alexander R. (7403416440); Ragazzi, Eugenio (7006243521); Anderson, Ken B. (7404580052); Rodrigues Do Nascimento, Daniel (57218606783); Ferreira Da Silva Filho, Wellington (57218607166); Kunzmann, Lutz (23389827900)

26428479500; 57211944832; 7403416440; 7006243521; 7404580052; 57218606783; 57218607166; 23389827900

Revealing the diversity of amber source plants from the Early Cretaceous Crato Formation, Brazil

BMC Evolutionary Biology

10.1186/s12862-020-01651-2

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089769727&doi=10.1186%2fs12862-020-01651-2&partnerID=40&md5=583f5141cba1d243774a7591bbfa8f55

Department of Palaeontology, University of Vienna, Althanstraße 14, Vienna, 1090, Austria; School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom; Department of Geobiology, University of Göttingen, Goldschmidtstraße 3, Göttingen, 37077, Germany; Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Largo E. Meneghetti 2, Padova, 35131, Italy; School of Earth Systems and Sustainability, Southern Illinois University, Carbondale, 62901, IL, United States; Department of Geology, Federal University of Ceará, Fortaleza, 60440-554, CE, Brazil; Senckenberg Natural History Collections Dresden, Museum of Mineralogy and Geology, Koenigsbruecker Landstraße 159, Dresden, 01109, Germany

Seyfullah L.J., Department of Palaeontology, University of Vienna, Althanstraße 14, Vienna, 1090, Austria; Roberts E.A., Department of Palaeontology, University of Vienna, Althanstraße 14, Vienna, 1090, Austria, School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom; Schmidt A.R., Department of Geobiology, University of Göttingen, Goldschmidtstraße 3, Göttingen, 37077, Germany; Ragazzi E., Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Largo E. Meneghetti 2, Padova, 35131, Italy; Anderson K.B., School of Earth Systems and Sustainability, Southern Illinois University, Carbondale, 62901, IL, United States; Rodrigues Do Nascimento D., Jr., Department of Geology, Federal University of Ceará, Fortaleza, 60440-554, CE, Brazil; Ferreira Da Silva Filho W., Department of Geology, Federal University of Ceará, Fortaleza, 60440-554, CE, Brazil; Kunzmann L., Senckenberg Natural History Collections Dresden, Museum of Mineralogy and Geology, Koenigsbruecker Landstraße 159, Dresden, 01109, Germany

Background: Amber has been reported from the Early Cretaceous Crato Formation, as isolated clasts or within plant tissues. Undescribed cones of uncertain gymnosperm affinity have also been recovered with amber preserved in situ. Here, we provide multiple lines of evidence to determine the botanical affinity of this enigmatic, conspicuous cone type, and to better understand the diversity of amber-source plants present in the Crato Formation and beyond. Results: A new taxon of amber-bearing pollen cone Araripestrobus resinosus gen. nov. et sp. nov. is described here from complete cones and characteristic disarticulated portions. The best-preserved cone portion has both in situ amber infilling the resin canals inside the preserved microsporophyll tissues and pollen of the Eucommiidites-type. This places this genus within the Erdtmanithecales, an incompletely known gymnosperm group from the Mesozoic. FTIR analysis of the in situ amber indicates a potential araucariacean conifer affinity, although affinity with cupressacean conifers cannot be definitely ruled out. Pyr-GC-MS analysis of the Araripestrobus resinosus gen. nov. et sp. nov. in situ fossil resin shows that it is a mature class Ib amber, thought to indicate affinities with araucariacean and cupressacean, but not pinaceous, conifers. This is the first confirmed occurrence of this class of amber in the Crato Formation flora and in South America, except for an archaeological sample from Laguna Guatavita, Colombia. Conclusions: The combined results of the cones' novel gross morphology and the analyses of the in situ amber and pollen clearly indicate that the new taxon of resinous gymnosperm pollen cones from the Crato Formation is affiliated with Erdtmanithecales. The cone morphology is very distinct from all known pollen cone types of this extinct plant group. We therefore assume that the plant group that produced Eucommiidites-type pollen is much more diverse in habits than previously thought. Moreover, the diversity of potential amber source plants from the Crato Formation is now expanded beyond the Araucariaceae and the Cheirolepidiaceae to include this member of the Erdtmanithecales. Despite dispersed Eucommiidites pollen being noted from the Crato Formation, this is the first time macrofossils of Erdtmanithecales have been recognized from the Early Cretaceous of South America. © 2020 The Author(s).

Amber; Araucariaceae; Cheirolepidaceae; Erdtmanithecales; Eucommiidites; Gnetales; In situ pollen; Resin

Amber; Biodiversity; Brazil; Cycadopsida; Fossils; Pollen; Brazil; Araucariaceae; Cheirolepidiaceae; Coniferophyta; Cupressaceae; Gnetales; Gymnospermae; amber; amber; Cretaceous; gymnosperm; paleobotany; preservation; species diversity; biodiversity; Brazil; classification; Cycadophyta; fossil; pollen

L.J. Seyfullah; Department of Palaeontology, University of Vienna, Vienna, Althanstraße 14, 1090, Austria; email: leyla.seyfullah@univie.ac.at

All Open Access; Gold Open Access

2-s2.0-85089769727

Iganci J.R.V.; Miotto S.T.S.; Souza-Chies T.T.; Särkinen T.E.; Simpson B.B.; Simon M.F.; Pennington R.T.

Iganci, J.R.V. (24376897200); Miotto, S.T.S. (6503971553); Souza-Chies, T.T. (6507962906); Särkinen, T.E. (18838105900); Simpson, B.B. (7102222079); Simon, M.F. (7404410415); Pennington, R.T. (7006229917)

24376897200; 6503971553; 6507962906; 18838105900; 7102222079; 7404410415; 7006229917

Diversification history of Adesmia ser. psoraleoides (Leguminosae): Evolutionary processes and the colonization of the southern Brazilian highland grasslands

South African Journal of Botany

10.1016/j.sajb.2013.06.016

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887818512&doi=10.1016%2fj.sajb.2013.06.016&partnerID=40&md5=8c83387d35306aa9d3b93de0fc8c4d43

Universidade Federal de Santa Catarina, 89520-000 Curitibanos, SC, Campus Universitário de Curitibanos, Caixa Postal, Brazil; Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Botânica, Porto Alegre, RS 91501-970, Av. Bento Gonçalves, 9500, Prédio 43433, Brazil; Department of Botany, Natural History Museum, London SW7 5BD, Cromwell Road, United Kingdom; Department of Botany, University of Texas, Austin, TX 78713, United States; Embrapa Recursos Genéticos e Biotecnologia, PqEB, 70770-917 Brasília, DF, Caixa Postal 02372, Brazil; Royal Botanic Garden Edinburgh, Tropical Diversity Section, Edinburgh EH3 5LR, 20a Inverleith Row, United Kingdom

Iganci J.R.V., Universidade Federal de Santa Catarina, 89520-000 Curitibanos, SC, Campus Universitário de Curitibanos, Caixa Postal, Brazil; Miotto S.T.S., Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Botânica, Porto Alegre, RS 91501-970, Av. Bento Gonçalves, 9500, Prédio 43433, Brazil; Souza-Chies T.T., Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Botânica, Porto Alegre, RS 91501-970, Av. Bento Gonçalves, 9500, Prédio 43433, Brazil; Särkinen T.E., Department of Botany, Natural History Museum, London SW7 5BD, Cromwell Road, United Kingdom; Simpson B.B., Department of Botany, University of Texas, Austin, TX 78713, United States; Simon M.F., Embrapa Recursos Genéticos e Biotecnologia, PqEB, 70770-917 Brasília, DF, Caixa Postal 02372, Brazil; Pennington R.T., Royal Botanic Garden Edinburgh, Tropical Diversity Section, Edinburgh EH3 5LR, 20a Inverleith Row, United Kingdom

A molecular phylogeny is used to analyze the diversification history of Adesmia ser. psoraleoides, and its implications for understanding the historical assembly of the grasslands in the highlands of southern Brazil. All species of A. ser. psoraleoides were sampled, including multiple accessions for each species, plus representative species of the rest of Adesmia covering its geographic distribution. Phylogenetic analyses were based on nuclear and plastid DNA sequences, and a plastid matK phylogeny was dated. A. ser. psoraleoides is a well-supported monophyletic group, nested within the series bicolores, muricatae, subnudae, longisetae and candidae. The stem of A. ser. psoraleoides is c. 11. Mya, but most extant species diversified c. 3-5. Mya, suggesting that the flora of the subtropical grasslands of southern Brazil was assembled recently, co-incident with the expansion of other tropical grassland systems globally. © 2013 South African Association of Botanists.

Adesmia; Biogeography; Campos de Cima da Serra; Dated phylogeny; Endemism; Fabaceae

Brazil; Adesmia; Candidae; Fabaceae; Mya; colonization; endemism; evolutionary biology; geographical distribution; grassland; legume; molecular analysis; paleobiogeography; paleobotany; phylogenetics; phylogeny

J.R.V. Iganci; Universidade Federal de Santa Catarina, 89520-000 Curitibanos, SC, Campus Universitário de Curitibanos, Caixa Postal, Brazil; email: joaoiganci@gmail.com

All Open Access; Hybrid Gold Open Access

2-s2.0-84887818512

Colletta G.D.; Scatigna A.V.; Souza V.C.

Colletta, Gabriel Dalla (57192870873); Scatigna, André Vito (56784297000); Souza, Vinicius Castro (7006367719)

57192870873; 56784297000; 7006367719

Assessment of Matourea pratensis (Plantaginaceae: Gratioleae) reveals an older name for Achetaria

10.1002/tax.12293

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089255764&doi=10.1002%2ftax.12293&partnerID=40&md5=3c171ccc937f621450bd93a82af058a9

Programa de Pós-graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato 255, Campinas, CEP 13083-862, São Paulo, Brazil; Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias 11, Piracicaba, CEP 13418900, São Paulo, Brazil

Colletta G.D., Programa de Pós-graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Rua Monteiro Lobato 255, Campinas, CEP 13083-862, São Paulo, Brazil; Scatigna A.V., Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias 11, Piracicaba, CEP 13418900, São Paulo, Brazil; Souza V.C., Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Av. Pádua Dias 11, Piracicaba, CEP 13418900, São Paulo, Brazil

Matourea pratensis is a name published by Aublet in 1775 that has never been typified and whose identity has long been obscure. It was historically associated with Stemodia foliosa, as S. pratensis, a species with reported medical importance and wide distribution in the Neotropics. However, its morphology has also been interpreted as more similar to Achetaria, a genus widely distributed throughout the Neotropics and also with medicinal, ecological and economic value. After an extensive bibliographical survey, along with morphological study of type specimens of M. pratensis, S. foliosa, and Achetaria spp., we conclude that (1) S. foliosa and M. pratensis represent distinct taxa; and (2) M. pratensis is congeneric with Achetaria. As a result, we transfer the currently accepted species of Achetaria to Matourea, proposing eight new combinations (M. azurea, M. caparaoensis, M. crenata, M. erecta, M. latifolia, M. ocymoides, M. platychila, M. scutellarioides). Additionally, we designate lectotypes for M. pratensis, Tetraplacus platychilus f. longifolius, Otacanthus caparaoensis, O. fluminensis, and O. villosus, and a second-step lectotype for Beyrichia scutellarioides. © 2020 International Association for Plant Taxonomy

French Guiana; Gratiolaceae; Lamiales; nomenclature; Scrophulariaceae; taxonomy

Gratiolaceae; Lamiales; Otacanthus; Plantaginaceae; Platychila; Scrophulariaceae; Stemodia; bibliography; biostratigraphy; economic analysis; fossil record; medicinal plant; morphology; Neotropical Region; nomenclature; paleobotany

G.D. Colletta; Programa de Pós-graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Rua Monteiro Lobato 255, CEP 13083-862, Brazil; email: gabrielcolletta@gmail.com

John Wiley and Sons Inc

2-s2.0-85089255764

Radaeski J.N.; Cunha D.J.D.; Bauermann S.G.

Radaeski, Jefferson Nunes (56464242200); Cunha, Djulhan Jacques da (57209908454); Bauermann, Soraia Girardi (6506398257)

56464242200; 57209908454; 6506398257

Understanding ecosystem dynamics of herbaceous grasslands (Campos) and arboreal forests (Bambuseae) using Poaceae pollen grains in the Coastal Plains Holocene sediments of Southern Brazil

10.1080/01916122.2019.1631225

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069050219&doi=10.1080%2f01916122.2019.1631225&partnerID=40&md5=007fa3bc48b91bc6904a1de0ac69987f

Laboratório de Palinologia da Universidade Luterana do Brasil–ULBRA, Universidade Luterana do Brazil, Canoas, Brazil

Radaeski J.N., Laboratório de Palinologia da Universidade Luterana do Brasil–ULBRA, Universidade Luterana do Brazil, Canoas, Brazil; Cunha D.J.D., Laboratório de Palinologia da Universidade Luterana do Brasil–ULBRA, Universidade Luterana do Brazil, Canoas, Brazil; Bauermann S.G., Laboratório de Palinologia da Universidade Luterana do Brasil–ULBRA, Universidade Luterana do Brazil, Canoas, Brazil

In this study we analysed fossil Poaceae pollen of the Holocene from the Coastal Plain of Rio Grande do Sul (Águas Claras region), southern Brazil. Through light microscopy analysis, we measured the size of 60 pollen grains in the 28 samples (or, in samples with low frequency of Poaceae, sufficient pollen grains for the number of measurements to show a stability curve). The measurements of fossil Poaceae pollen were interpreted applying information from the modern Poaceae pollen dataset. Fossil Poaceae pollen showed changes from the Early Holocene to the present. Results showed that it is possible to obtain more ecological information (vegetation and climate changes) from fossil Poaceae pollen. Furthermore, dynamics of Poaceae vegetation during the Holocene are revealed. The palynological record documents the predominance of Poaceae herbaceous grasslands (63%) during the Early Holocene (10,974 ± 49 14C BP) and the low representation of Poaceae arboreal forests (Bambuseae–15%). Vegetation changes are detected from 3420 years BP with an increase in Poaceae arboreal forests (75%) and a decrease in Poaceae herbaceous grasslands (115 cm). This significant change may indicate the late vegetation shift in response to sea-level change. At 1072 years BP, a peak of Poaceae arboreal forests (85%) indicates warm conditions. The representation of Poaceae arboreal forests (Bambuseae) decreased drastically (27%) at 536 years BP. Pollen grains from samples closer to the surface (5 and 15 cm) reflect modern vegetation in the region. Poaceae pollen is shown to be sensitive to climate changes and therefore useful for the analysis of dynamics of grassland and forest vegetation. © 2019, © 2019 AASP–The Palynological Society.

grasses; palaeovegetation; Palynology; pampa; pollen analysis; pollen morphology

Brazil; Campo Grande; Mato Grosso do Sul; Rio Grande do Sul; Bambuseae; Poaceae; angiosperm; arboreal species; climate change; data set; ecosystem dynamics; forest ecosystem; fossil record; grassland; herb; Holocene; paleobotany; pollen; sea level change

Taylor and Francis Inc.

2-s2.0-85069050219

Santos C.A.; Santos M.F.A.; Fonseca V.M.M.; Dutra T.L.; Corrêa G.D.R.

Santos, Coryntho A. (57190001921); Santos, Marcia F.A. (43061510300); Fonseca, Vera M.M. (23975817400); Dutra, Tânia L. (55983008300); Corrêa, Gabriela da R. (57190005632)

57190001921; 43061510300; 23975817400; 55983008300; 57190005632

The use of MS ACCESS for data base in the management of collections: A case study in paleontological museums; [Uso do MS ACCESS como aplicativo para base de dados no gerenciamento de coleções: Estudo de caso em museus de paleontologia]

10.4013/gaea.2016.91.04

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976439878&doi=10.4013%2fgaea.2016.91.04&partnerID=40&md5=e0007fddc1a6eb0205b7273cb947510c

Aposentado pelo Ministério de Minas e Energia, Rio de Janeiro, RJ, Brazil; Museu Nacional, Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Setor de Paleoinvertebrados, Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, 20940-040, Brazil; Museu de História Geológica do Rio Grande do Sul (MHGEO), Laboratório de História da Vida e da Terra (LaViGæa), Universidade do vale do Rio dos Sinos, Av. Unsinos, 950, São Leopoldo, RS, 93022-750, Brazil

Santos C.A., Aposentado pelo Ministério de Minas e Energia, Rio de Janeiro, RJ, Brazil; Santos M.F.A., Museu Nacional, Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Setor de Paleoinvertebrados, Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, 20940-040, Brazil; Fonseca V.M.M., Museu Nacional, Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Setor de Paleoinvertebrados, Quinta da Boa Vista, s/n, São Cristóvão, Rio de Janeiro, RJ, 20940-040, Brazil; Dutra T.L., Museu de História Geológica do Rio Grande do Sul (MHGEO), Laboratório de História da Vida e da Terra (LaViGæa), Universidade do vale do Rio dos Sinos, Av. Unsinos, 950, São Leopoldo, RS, 93022-750, Brazil; Corrêa G.D.R., Museu de História Geológica do Rio Grande do Sul (MHGEO), Laboratório de História da Vida e da Terra (LaViGæa), Universidade do vale do Rio dos Sinos, Av. Unsinos, 950, São Leopoldo, RS, 93022-750, Brazil

A new approach in cataloguing fossil samples stored in scientific collection is herein presented. By the use of a Databases and their management, a query mode in paleontological collections is applied using the Microsoft Office ACCESS tool. With this purpose, two Brazilian paleontological collection were used to verify the internal management and facilities of this application, the Paleoinvertebrates repository from the National Museum of Rio de Janeiro (MN), at UFRJ (Federal University of Rio de Janeiro), and the Paleobotany and Paleoinvertebrate collections from LaViGæa/MHGEO Museum, at Unisinos (Vale do Rio dos Sinos University). The databases were developed using previous enters furnished by the Catalogue books (e.g. source locality and taxonomy) and in accord with its page disposition - a table form. It takes into account that in a Database, a table is a basic component and represents a group of data. Fifteen tables were constructed, with the main ones ("Tbl Paleoinvertebrados" or "Tbl Paleobotânica") and the related secondaries, whose data are stored in the principal one. Therefore, 34 (MN) and 33 (LaViGæa, Unisinos) fields were constructed, with a capacity of storage of more than 900,000 samples. The data is inserted through the form "Frm_Paleoinvertebrados" or "Frm_Paleobotânica", since all of the fields are easily viewed, which minimizes the mistakes. The Databases constructed, using the ACCESS, demonstrate its easy performance and agility in data insertion. The use of a Tab key allows to access the fields, and a "Combo Box" in the majority of the fields (32) allows to automatically save the data with a click in the specific name. The system is able to print labels, attach photos and has "a query mode", all important resources in doing any research faster and useful. The good resolution and innovation of this project was mainly due to the partnership between researchers and the programmer.

Database; Fossil collections management; MS ACCESS; Query mode

Universidade do Vale do Rio dos Sinos

All Open Access; Gold Open Access

2-s2.0-84976439878

Dórea M.C.; De Oliveira R.P.; Banks H.; Dos Santos F.A.R.

Dórea, Marcos Da Costa (32867690200); De Oliveira, Reyjane Patricia (7103158135); Banks, Hannah (7102104515); Dos Santos, Francisco De Assis Ribeiro (57222507544)

32867690200; 7103158135; 7102104515; 57222507544

Sculptural elements on the ectexine surface of Poaceae pollen from Neotropical forests: Patterns and implications for taxonomic and evolutionary studies in this family

Botanical Journal of the Linnean Society

10.1093/botlinnean/box073

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042118930&doi=10.1093%2fbotlinnean%2fbox073&partnerID=40&md5=ef916f81d1af815922dbb06835c4dc91

Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil; Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, United Kingdom

Dórea M.C., Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil; De Oliveira R.P., Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil; Banks H., Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, United Kingdom; Dos Santos F.A.R., Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, Feira de Santana, Bahia, 44036-900, Brazil

Poaceae have been historically recognized by having homogeneous pollen grains. Most of the available studies have focused on species from open areas, and studies of tropical forest representatives of the family are scarce. Some studies have suggested pollination assisted by insects, contrasting with the traditional anemophily known for this family. We analysed pollen surface of 121 specimens belonging to 87 species, eight tribes and four subfamilies of Poaceae from Neotropical forests, based on scanning electron microscopy method. None of the analysed samples had ectexine without ornamentation. Four different patterns were observed, three mixed and one of them simple: microechinateareolate (all tribes except Streptochaeteae; 71 species); microechinate-perfurate (12 species); microechinate-rugulate (exclusive to Olyreae, the tribe that includes the herbaceous bamboos and is confined to the understory in the Neotropical region; two species) and microechinate (Bambuseae and Streptochaeteae, two species). The present data broaden the knowledge on the palynology of Poaceae from tropical forests, because 14 genera and 75 species have the pollen surface characterized for the first time in this article. Patterns of ectexine variation, especially in subfamilies Anomochlooideae and Bambusoideae, include differences between and within genera, with application to taxonomic and evolutionary studies, and probably to other fields such as ecology, palaeobotany and reproductive biology in the family. © 2017 The Linnean Society of London.

Bamboos; Forest grasses; Palynology; SEM

Anomochlooideae; Bambusa; Bambuseae; Bambusoideae; Hexapoda; Olyreae; Poaceae; Streptochaeteae; anemophily; bamboo; evolutionary biology; forest; herb; Neotropical Kingdom; palynology; pollen; pollination; scanning electron microscopy; taxonomy; tropical forest; understory

M.C. Dórea; Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana, Bahia, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Brazil; email: mcdorea@uefs.br

Oxford University Press

2-s2.0-85042118930

El Atfy H.; Jasper A.; Uhl D.

El Atfy, Haytham (35304932400); Jasper, André (7003460953); Uhl, Dieter (56275118900)

35304932400; 7003460953; 56275118900

A new record of Paradoxopteris stromeri Hirmer 1927 (Monilophyta, incertae sedis) from the Cenomanian of Sinai, Egypt

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2019.104148

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076043939&doi=10.1016%2fj.revpalbo.2019.104148&partnerID=40&md5=e289b3aae3303f63c9b9417529a502bf

Institut für Geowissenschaften, Eberhard Karls Universität Tübingen, Sigwartstraße 10, Tübingen, 72076, Germany; Department of Geology, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari - Univates (PPGAD/UNIVATES), Avenida Avelino Tallini, 171 – CEP 95.914-014, Lajeado, RS, Brazil; Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, Frankfurt am Main, 60325, Germany

El Atfy H., Institut für Geowissenschaften, Eberhard Karls Universität Tübingen, Sigwartstraße 10, Tübingen, 72076, Germany, Department of Geology, Faculty of Science, Mansoura University, Mansoura, 35516, Egypt; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari - Univates (PPGAD/UNIVATES), Avenida Avelino Tallini, 171 – CEP 95.914-014, Lajeado, RS, Brazil; Uhl D., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari - Univates (PPGAD/UNIVATES), Avenida Avelino Tallini, 171 – CEP 95.914-014, Lajeado, RS, Brazil, Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, Frankfurt am Main, 60325, Germany

The taxon Paradoxopteris stromeri Hirmer, representing the rachis/petiole/stem of the fern Weichselia reticulata (Stokes et Webb) Fontaine, has a widespread occurrence in the Early–early Late Cretaceous of Northern Africa and the Near East, Europe, as well as South America. Here a new record of this taxon is presented from Cenomanian deposits at Gebel El Minshera in the Northern Sinai (Egypt), adding further evidence for the widespread occurrence of this taxon during this period. The preservation of the here described specimen is peculiar, as it consists of permineralised (silicified) vascular strands, mostly without parenchyma or other tissues preserved in between individual strands. This preservation allows for an observation of the “fishbone” pattern formed by alternating circles of the main vascular strands and perpendicular accessory strands, which makes this taxon unique amongst ferns. Based on the specimen from Sinai, as well as previously figured specimens from the type locality at the Bahariya Oasis in the Western Desert, Egypt, an improved reconstruction of the vascular system of this taxon is proposed. © 2019 Elsevier B.V.

Cenomanian; Egypt; Fern; Galala Formation; Sinai; Weichselia

Bahariya Oasis; Eastern Europe; Egypt; Giza [Egypt]; North Africa; Sinai; South America; Western Desert; Filicophyta; Cenomanian; Cretaceous; fern; new record; paleobotany; preservation; reconstruction; type locality

D. Uhl; Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, Senckenberganlage 25, 60325, Germany; email: dieter.uhl@senckenberg.de

Rev. Palaeobot. Palynol.

2-s2.0-85076043939

Iannuzzi R.; Pfefferkorn H.W.

Iannuzzi, R. (6603970107); Pfefferkorn, H.W. (6602130115)

6603970107; 6602130115

Re-interpreting kegelidium lamegoi dolianiti, a microsporangiate organ from the poti formation (Late visean), parnaíba basin, northeastern Brazil; [Reinterpretaçao de Kegelidium lamegoi Dolianiti, um órgão microesporangiado da Formação Poti (Viseano tardio), Bacia do Parnaíba, Nordeste do Brasil]

Comunicacoes Geologicas

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929083043&partnerID=40&md5=5b6a57638d76f09ba1d067284418b4cf

Instituto de Geociências, Universidad Federal Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91.540-000, RS, Brazil; Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, 19104-6316, PA, United States

Iannuzzi R., Instituto de Geociências, Universidad Federal Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91.540-000, RS, Brazil; Pfefferkorn H.W., Department of Earth and Environmental Science, University of Pennsylvania, Philadelphia, 19104-6316, PA, United States

Kegelidium lamegoi corresponds to a microsporangiate organ displaying terminal clusters of non-synangiate microsporangia typical for early pteridosperms and it represents one of the few published records of fertile structures of seed plants from the Early Carboniferous deposits of Gondwana. In terms of systematic relationship, K. lamegoi shows the closest morphological similarities with primitive Early Carboniferous pteridosperms related to Lyginopteridaceae. The presence of K. lamegoi and close related forms as Obandotheca laminensis in Southern Hemisphere becomes more evident so high diversified and widespread lyginopterid-like plants were in Late Mississippian times. © 2014 LNEG – Laboratório Nacional de Geologia e Energia IP.

Kegelidium lamegoi; Late Visean; Microsporangiate organ; Parnaíba Basin; Poti Formation

Brazil; Parnaiba Basin; Lyginopteridaceae; Spermatophyta; biostratigraphy; fossil record; Gondwana; Mississippian; paleobotany; Southern Hemisphere

Laboratorio Nacional de Energia e Geologia

Comunicacoes Geologicas

2-s2.0-84929083043

Spiekermann R.; Jasper A.; Siegloch A.M.; Guerra-Sommer M.; Uhl D.

Spiekermann, Rafael (56925270700); Jasper, André (7003460953); Siegloch, Anelise Marta (56374376400); Guerra-Sommer, Margot (6602534370); Uhl, Dieter (56275118900)

56925270700; 7003460953; 56374376400; 6602534370; 56275118900

Not a lycopsid but a cycad-like plant: Iratinia australis gen. nov. et sp. nov. from the Irati Formation, Kungurian of the Paraná Basin, Brazil

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2021.104415

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102430182&doi=10.1016%2fj.revpalbo.2021.104415&partnerID=40&md5=9b6ea28f89d9ed4cf16afade194c3203

Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil; Instituto de Geociências, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil

Spiekermann R., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil; Siegloch A.M., Instituto de Geociências, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil; Guerra-Sommer M., Instituto de Geociências, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil; Uhl D., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany, Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil

A new fossil taxon, Iratinia australis gen. nov. et. sp. nov., is proposed based on a monoxylic anatomically preserved axis from the Irati Formation, Kungurian of the Paraná Basin, Brazil. This specimen was initially interpreted as a lycopsid, but its set of morpho-anatomical characteristics indicate that it has systematic affinity with Cycadales. Iratinia australis is the oldest known anatomically preserved vegetative axis bearing affinities with this particular botanical order. It indicates that the general anatomy of cycad monoxylic axes, as well as the armour of leaf bases and the girdling leaf traces characteristic for Cycadales, were already established in the Kungurian. This fossil is the first record of an anatomically preserved cycad axis from the Permian of Gondwana, suggesting that during the Cisularian Cycadales or their direct ancestors were already widely/worldwide distributed. © 2021 Elsevier B.V.

Cisuralian; Cycadales; Cycads; Girdling leaf traces; Gondwana; Paraná Basin

Parana Basin; Cycadales; Cycadopsida; Morpho; anatomy; fossil record; morphology; new taxon; paleobotany; paleoecology; Permian; type specimen

R. Spiekermann; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Senckenberganlage 25, 60325, Germany; email: rafael.spiekermann@senckenberg.de

Rev. Palaeobot. Palynol.

2-s2.0-85102430182

Silva do Nascimento T.; Lopes dos Santos A.; Lima D.U.; Fabbrin Pires Oliveira E.; Da-Rosa Á.A.S.

Silva do Nascimento, Taluany (57222122844); Lopes dos Santos, Aline (57222128822); Lima, Débora Ulisses (57222123466); Fabbrin Pires Oliveira, Etiene (35910671900); Da-Rosa, Átila Augusto Stock (56261309700)

57222122844; 57222128822; 57222123466; 35910671900; 56261309700

New records of fossil leaves from Abunã Basin, Upper Pleistocene, Rondônia, Brazil

Historical Biology

10.1080/08912963.2020.1870225

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101497297&doi=10.1080%2f08912963.2020.1870225&partnerID=40&md5=274ef5632e9fa329221b2f9802d285f9

Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Brazil; Programa de Pós Graduação em Biodiversidade, Ecologia e Conservação, Universidade Federal do Tocantins, Porto Nacional, Brazil; Universidade Federal de Santa Maria, Santa Maria, Brazil

Silva do Nascimento T., Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Brazil, Programa de Pós Graduação em Biodiversidade, Ecologia e Conservação, Universidade Federal do Tocantins, Porto Nacional, Brazil; Lopes dos Santos A., Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Brazil; Lima D.U., Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Brazil; Fabbrin Pires Oliveira E., Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Brazil, Programa de Pós Graduação em Biodiversidade, Ecologia e Conservação, Universidade Federal do Tocantins, Porto Nacional, Brazil; Da-Rosa Á.A.S., Universidade Federal de Santa Maria, Santa Maria, Brazil

Detailed descriptions were carried out for four (4) new leaves morphotypes belonging to Calophyllaceae (Calophyllum sp.), Chrysobalanaceae (Couepia sp.) and Fabaceae (Morphotype 1 and Senna sp.), from the Rio Madeira Formation, Upper Pleistocene, Abunã Basin, Rondônia State, Brazil. Detailed characteristics from the leaf architectures show the similarity of the specimens here analysed with their representatives that are established in the current forest cover. The presence of these families in this basin indicates a paleoclimate as well as a paleoenvironment with similar conditions to the present, thus supporting the inference that they could have been important components of paleoflora. These new records are unpublished for the Neopleistocene in the amazon region, increasing the geographic distribution for the families reported here. © 2021 Informa UK Limited, trading as Taylor & Francis Group.

Calophyllaceae; Chrysobalanaceae; Fabaceae; Leaf architecture; Quaternary

Brazil; Rondonia; Calophyllum; Chrysobalanaceae; Couepia; Fabaceae; fossil record; leaf; morphotype; paleobotany; paleoclimate; paleoenvironment; Pleistocene

E. Fabbrin Pires Oliveira; Laboratório de Paleobiologia, Universidade Federal do Tocantins, Porto Nacional, Rua 03, S/n, Jardim dos Ipês, Brazil; email: etienefabbrin@uft.edu.br

Taylor and Francis Ltd.

2-s2.0-85101497297

Santiago F.; Ricardi-Branco F.

Santiago, Francisco (56379824600); Ricardi-Branco, Fresia (6508015390)

56379824600; 6508015390

Paleoclimatic interpretations from the Nova Iorque Pliocene flora, Maranhão, Brazil; [Interpretações paleoclimáticas a partir da flora pliocênica de Nova Iorque, Maranhão, Brasil]

Revista Brasileira de Paleontologia

10.4072/rbp.2018.1.05

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048488768&doi=10.4072%2frbp.2018.1.05&partnerID=40&md5=44d4ffaaa04a015b99e5e96ba8ecc64b

Instituto de Geociências, Universidade Estadual de Campinas, Cx.P. 6152, Campinas, 13083-970, SP, Brazil; Departamento de Geologia e Recursos Naturais, Instituto de Geociências, Universidade Estadual de Campinas, Cx.P. 6152, Campinas, 13083-970, SP, Brazil

Santiago F., Instituto de Geociências, Universidade Estadual de Campinas, Cx.P. 6152, Campinas, 13083-970, SP, Brazil; Ricardi-Branco F., Departamento de Geologia e Recursos Naturais, Instituto de Geociências, Universidade Estadual de Campinas, Cx.P. 6152, Campinas, 13083-970, SP, Brazil

The Nova Iorque fossil flora, located in northeastern Brazil, is the only fossil flora known for the Pliocene of the Nova Iorque Basin. Because the paleobotanical records in the areas populated by the Caatinga vegetation are scarce, this flora is very important to understand the climatic and environmental changes that occurred in northeastern Brazil. The main physiognomic characteristics - margin type and leaf area - of the angiosperm leaves of 26 species of this flora, allowed us to carry out a quantitative estimation of mean annual temperature (MAT) and mean annual precipitation (MAP) for the moment of its sedimentation. The different equations used to estimate the MAT and the MAP are based on univariate methods known as Leaf Margin Analysis and Leaf Area Analysis. The equations used indicate that the Nova Iorque fossil flora developed under a MAT between 26.1 and 26.7°C and a MAP between 580 and 833 mm. These values are very similar to those currently registered in the region where the Nova Iorque fossil flora is located; therefore, this flora lived under a climate similar to that of the Caatinga, which is characterized by being warm and semi-arid. Because this fossil flora has developed under conditions similar to those of the current flora, it is possible to infer that this flora represents a precursor of a phytophysiognomy of the Caatinga. © 2018, Sociedade Brasileira de Paleontologia. All rights reserved.

Angiosperm leaves; Caatinga; Leaf area analysis; Leaf margin analysis; Pliocene; Warm semi-arid climate

Sociedade Brasileira de Paleontologia

Rev. Bras. Paleontol.

All Open Access; Bronze Open Access

2-s2.0-85048488768

Martinetto E.; Bertini A.; Basilici G.; Baldanza A.; Bizzarri R.; Cherin M.; Gentili S.; Pontini M.R.

Martinetto, Edoardo (57213775019); Bertini, Adele (7004404088); Basilici, Giorgio (16400718100); Baldanza, Angela (6506517444); Bizzarri, Roberto (36868679000); Cherin, Marco (55511798800); Gentili, Sergio (7004229096); Pontini, Maria Rita (6506631167)

57213775019; 7004404088; 16400718100; 6506517444; 36868679000; 55511798800; 7004229096; 6506631167

The plant record of the Dunarobba and Pietrafitta sites in the plio-pleistocene palaeoenvironmental context of central Italy

Alpine and Mediterranean Quaternary

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922851697&partnerID=40&md5=ea7e3a306712d93d7111b2c79dfe981c

Dipartimento di Scienze della Terra, Università degli Studi di Torino, Torino, Italy; Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Firenze, Italy; Geoscience Institute, State University of Campinas, Campinas, Brazil; Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, Italy; Centro di Ateneo per i Musei Scientifici, Università degli Studi di Perugia, Perugia, Italy; Via P. Nenni 4, Chiusi, Italy

Martinetto E., Dipartimento di Scienze della Terra, Università degli Studi di Torino, Torino, Italy; Bertini A., Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Firenze, Italy; Basilici G., Geoscience Institute, State University of Campinas, Campinas, Brazil; Baldanza A., Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, Italy; Bizzarri R., Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, Italy; Cherin M., Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, Italy; Gentili S., Centro di Ateneo per i Musei Scientifici, Università degli Studi di Perugia, Perugia, Italy; Pontini M.R., Via P. Nenni 4, Chiusi, Italy

Dunarobba and Pietrafitta are two outstanding fossil sites, which provide us with a glimpse on central Italian palaeoenvironments during two different time spans. The still poorly dated Dunarobba succession is framed, mainly on the basis of continental mollusc biochronology, within the Piacenzian-Gelasian interval, whereas the Pietrafitta one is reliably dated to the Calabrian thanks to vertebrate biochronology. Here we add several new palaeobotanical data for the two sites and we provide for the first time an overview of the stratigraphic, sedimentological, palaeontological and palaeoenvironmental results so-far obtained. We also review the palaeobotanical evidence concerning the neighbouring sites of Cava Toppetti I/II, Fosso Bianco, Torre Picchio and Villa San Faustino. On the basis of the available datasets we conclude that the Dunarobba Fossil Forest, with several large conifer trunks in upright position, was produced by an ancient swamp vegetation dominated by Glyptostrobus europaeus, and including few other woody (Alnus, Cephalanthus, Cornus) and herbaceous (Carex, Cladium, Schoenoplectus) plants. Rich water-transported fruit and seed assemblages and pollen data indicate that the well-drained palaeoenvironments around the Dunarobba palaeo-swamp were covered by a forest having a floristic affinity to the modern Mixed Mesophytic Forests of East Asia, as proved by the occurrence of Cryptomeria, Eurya, Sinomenium, etc. The disappearance of the Glyptostrobus swamp forest was due to the establishment of well-drained palaeoenvironmental conditions, testified by a palaeosol profile. The Pietrafitta site is characterized by a thick lignite seam, which embedded several carcasses of Mammuthus meridionalis, cervids, monkeys, rhinoceroses, etc. Sedimentological and palaeontological data indicate a lacustrine environment, as confirmed by newly studied fruit and seed assemblages dominated by such aquatic plants as: Azolla, Najas, Nymphaea, Potamogeton, etc. The pollen assemblage, studied in the 1960s-1970s, is still rich in exotic elements, and allows us to reconstruct a humid deciduous broadleaved forest, with a relevant subdivision of a bottom unit rich in Taxodium type pollen, and a top unit, lacking this pollen type and including all the lignite seam.

Biochronology; Central Italy; Local palaeovegetation; Palaeobotany; Palynology; Pleistocene; Pliocene; Sedimentology

Alnus; Azolla; Carex; Cephalanthus; Cervidae; Cladium; Coniferophyta; Cornus; Cryptomeria; Eurya; Glyptostrobus; Glyptostrobus europaeus; Mammuthus meridionalis; Mollusca; Najas; Nymphaea; Potamogeton; Rhinocerotidae; Schoenoplectus; Sinomenium; Taxodium; Vertebrata

AIQUA - Associazione Italiana per lo Studio del Quaternario

Alp. Mediterr. Quat.

2-s2.0-84922851697

Gomes V.H.F.; Mayle F.E.; Gosling W.D.; Vieira I.C.G.; Salomão R.P.; ter Steege H.

Gomes, Vitor H. F. (57194168730); Mayle, Francis E. (6701544817); Gosling, William D. (55881697700); Vieira, Ima C. G. (7003391442); Salomão, Rafael P. (8044557100); ter Steege, Hans (6603780906)

57194168730; 6701544817; 55881697700; 7003391442; 8044557100; 6603780906

Modelling the distribution of Amazonian tree species in response to long-term climate change during the Mid-Late Holocene

Journal of Biogeography

10.1111/jbi.13833

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85082066711&doi=10.1111%2fjbi.13833&partnerID=40&md5=8a93f27a73d8ac8e6151756a38748079

Escola de Negócios Tecnologia e Inovação, Centro Universitário do Pará, Belém, Pará, Brazil; Programa de Pós-Graduação em Ciência Ambientais, Universidade Federal do Pará, Belém, Pará, Brazil; Centre for Past Climate Change and Department of Geography & Environmental Science, School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Reading, Berkshire, United Kingdom; Department of Ecosystem & Landscape Dynamics, Institute for Biodiversity & Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands; Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, Pará, Brazil; Programa Visitante Nacional Sênior na Amazônia – CAPES, Universidade Federal Rural da Amazônia, Belém, Pará, Brazil; Naturalis Biodiversity Center, Leiden, Netherlands; Systems Ecology, Vrije Universiteit, Amsterdam, Netherlands

Gomes V.H.F., Escola de Negócios Tecnologia e Inovação, Centro Universitário do Pará, Belém, Pará, Brazil, Programa de Pós-Graduação em Ciência Ambientais, Universidade Federal do Pará, Belém, Pará, Brazil; Mayle F.E., Centre for Past Climate Change and Department of Geography & Environmental Science, School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Reading, Berkshire, United Kingdom; Gosling W.D., Department of Ecosystem & Landscape Dynamics, Institute for Biodiversity & Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands; Vieira I.C.G., Programa de Pós-Graduação em Ciência Ambientais, Universidade Federal do Pará, Belém, Pará, Brazil, Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, Pará, Brazil; Salomão R.P., Coordenação de Botânica, Museu Paraense Emílio Goeldi, Belém, Pará, Brazil, Programa Visitante Nacional Sênior na Amazônia – CAPES, Universidade Federal Rural da Amazônia, Belém, Pará, Brazil; ter Steege H., Naturalis Biodiversity Center, Leiden, Netherlands, Systems Ecology, Vrije Universiteit, Amsterdam, Netherlands

Aim: To (a) assess the environmental suitability for rainforest tree species of Moraceae and Urticaceae across Amazonia during the Mid-Late Holocene and (b) determine the extent to which their distributions increased in response to long-term climate change over this period. Location: Amazonia. Taxon: Tree species of Moraceae and Urticaceae. Methods: We used MaxEnt and inverse distance weighting interpolation to produce environmental suitability and relative abundance models at 0.5-degree resolution for tree species of Moraceae and Urticaceae, based on natural history collections and a large plot dataset. To test the response of the Amazon rainforest to long-term climate change, we quantified the increase in environmental suitability and modelled species richness for both families since the Mid-Holocene (past 6,000 years). To test the correlation between the relative abundance of these species in modern vegetation versus modern pollen assemblages, we analysed the surface pollen spectra from 46 previously published paleoecological sites. Results: We found that the mean environmental suitability in Amazonia for species of Moraceae and Urticaceae showed a slight increase (6.5%) over the past 6,000 years, although southern ecotonal Amazonia and the Guiana Shield showed much higher increases (up to 68%). The accompanied modelled mean species richness increased by as much as 120% throughout Amazonia. The mean relative abundance of Moraceae and Urticaceae correlated significantly with the modern pollen assemblages for these families. Main Conclusions: Increasing precipitation between the Mid- and Late Holocene expanded suitable environmental conditions for Amazonian humid rainforest tree species of Moraceae and Urticaceae, leading to rainforest expansion in ecotonal areas of Amazonia, consistent with previously published fossil pollen data. © 2020 John Wiley & Sons Ltd

Amazonian rainforest; climate change; distribution modelling; Holocene; Moraceae; tree species; Urticaceae

Amazonia; Guyana Shield; Moraceae; Urticaceae; biostratigraphy; climate change; Holocene; long-term change; paleobotany; paleoecology; paleoenvironment; palynology; relative abundance; species richness; spectral analysis; tree

V.H.F. Gomes; Escola de Negócios Tecnologia e Inovação, Centro Universitário do Pará, Belém, Brazil; email: vitor.gomes@prof.cesupa.br; V.H.F. Gomes; Programa de Pós-Graduação em Ciência Ambientais, Universidade Federal do Pará, Belém, Brazil; email: vitor.gomes@prof.cesupa.br

Blackwell Publishing Ltd

All Open Access; Green Open Access

2-s2.0-85082066711

Cárdenas M.L.; Wilson O.J.; Schorn L.A.; Mayle F.E.; Iriarte J.

Cárdenas, Macarena L. (36996931500); Wilson, Oliver J. (57208051229); Schorn, Lauri A. (35077379500); Mayle, Francis E. (6701544817); Iriarte, José (35577027700)

36996931500; 57208051229; 35077379500; 6701544817; 35577027700

A quantitative study of modern pollen–vegetation relationships in southern Brazil's Araucaria forest

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2019.03.003

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063670443&doi=10.1016%2fj.revpalbo.2019.03.003&partnerID=40&md5=417932a6b707f355669755e7a9ca6062

School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Whiteknights, P.O. Box 227, Reading, RG6 6DW, Berkshire, United Kingdom; Departamento e Engenharia Florestal, Universidade Regional de Blumenau, 47-99973-4820, 47-3221-6043, Brazil; Department of Archaeology, University of Exeter, North Park Rd, Exeter, EX4 4QE, United Kingdom

Cárdenas M.L., School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Whiteknights, P.O. Box 227, Reading, RG6 6DW, Berkshire, United Kingdom; Wilson O.J., School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Whiteknights, P.O. Box 227, Reading, RG6 6DW, Berkshire, United Kingdom; Schorn L.A., Departamento e Engenharia Florestal, Universidade Regional de Blumenau, 47-99973-4820, 47-3221-6043, Brazil; Mayle F.E., School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Whiteknights, P.O. Box 227, Reading, RG6 6DW, Berkshire, United Kingdom; Iriarte J., Department of Archaeology, University of Exeter, North Park Rd, Exeter, EX4 4QE, United Kingdom

Southern Brazil's highland Araucaria forest is ancient, diverse and unique, but its future is under significant threat from 20th Century habitat loss and 21st Century climate change. Paleoecological studies have revealed that it expanded rapidly over highland grasslands around 1000 years ago, but whether this expansion was caused by human land use or climate change has been a topic of considerable debate. Discriminating between these potential drivers has so far not been possible with fossil pollen, however, as the palynological representation of floristic and structural differences in Araucaria forest remains poorly understood. Here, we address this shortcoming using modern pollen rain from moss polsters and vegetation surveys in forest areas with minimal current human disturbance. We show that forest plots with evident structural differences lack consistent differences in their floristic composition and cannot be reliably distinguished by their pollen spectra. We quantify pollen–vegetation relationships for 27 key tree genera of Araucaria forest, showing that, despite significant intra-taxon variability, 22 of these are under-represented or absent in the pollen record. These palynologically under-represented and silent taxa include many of the forest's most ecologically important tree species, with only Araucaria, Lamanonia, Podocarpus, Myrsine and Clethra being more abundant in the pollen rain than vegetation. Our results suggest that subtle structural changes in Araucaria forest, as well as moderate to significant floristic changes, may not be clearly distinguished in fossil pollen records – an important limitation when attempting to identify past human and climatic impacts on Araucaria forest via pollen analysis. © 2019 Elsevier B.V.

Araucaria forest; Human impact; Modern analogs; Moss polsters; Pollen

Araucaria; Brazil; Parana [Brazil]; Araucaria; Bryophyta; Clethra; Myrsine; Podocarpus; anthropogenic effect; climate change; forest ecosystem; fossil record; habitat loss; land use change; moss; paleobotany; palynology; phytogeographical region; pollen; pollen rain; quantitative analysis

O.J. Wilson; School of Archaeology, Geography and Environmental Science (SAGES), University of Reading, Reading, Whiteknights, P.O. Box 227, RG6 6DW, United Kingdom; email: o.j.wilson@reading.ac.uk

Rev. Palaeobot. Palynol.

All Open Access; Green Open Access

2-s2.0-85063670443

Mohr B.A.R.; Bernardes-de-Oliveira M.E.C.; Loveridge R.; Pons D.; Sucerquia P.A.; Castro-Fernandes M.C.

Mohr, Barbara A.R. (55194189300); Bernardes-de-Oliveira, Mary E.C. (16634415400); Loveridge, Robert (11440044000); Pons, Denise (7005466770); Sucerquia, Paula Andréa (55185227800); Castro-Fernandes, Maria C. (56463001700)

55194189300; 16634415400; 11440044000; 7005466770; 55185227800; 56463001700

Ruffordia goeppertii (Schizaeales, Anemiaceae) - A common fern from the Lower Cretaceous Crato Formation of northeast Brazil

Cretaceous Research

10.1016/j.cretres.2014.11.006

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919946904&doi=10.1016%2fj.cretres.2014.11.006&partnerID=40&md5=f97eba54002537ac36d06d5ad9b5c464

Museum für Naturkunde, Berlin, Germany; Institute of Geosciences, University of São Paulo, Brazil; University of Guarulhos, CEPPE - Post-Graduation, Research and Specialisation Centre, São Paulo, Brazil; University of Portsmouth, School of Earth and Environmental Sciences, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom; Université Pierre and Marie Curie, Laboratoire Paléobotanique, 12 rue Cuvier, Paris, France

Mohr B.A.R., Museum für Naturkunde, Berlin, Germany; Bernardes-de-Oliveira M.E.C., Institute of Geosciences, University of São Paulo, Brazil, University of Guarulhos, CEPPE - Post-Graduation, Research and Specialisation Centre, São Paulo, Brazil; Loveridge R., University of Portsmouth, School of Earth and Environmental Sciences, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom; Pons D., Université Pierre and Marie Curie, Laboratoire Paléobotanique, 12 rue Cuvier, Paris, France; Sucerquia P.A., Institute of Geosciences, University of São Paulo, Brazil; Castro-Fernandes M.C., Institute of Geosciences, University of São Paulo, Brazil

Extraordinarily well preserved fern macrofossils of Ruffordia goeppertii (Dunker) Seward (Schizaeales, Anemiaceae) are described from the Lower Cretaceous (late Aptian) Nova Olinda Member of the Crato Formation, northeast Brazil. The identification is based on the morphology of macrofossils and in situ spores, taken from organically preserved material. This extinct, relatively small fern exhibits dimorphic fronds with sterile and fertile pinnules and schizaeoid sporangia, including cicatricose spores. The growth form with clearly differentiated sterile and fertile pinnae may be interpreted as an ancestral state in the phylogeny of the extant genus Anemia. The abundance of this fern reflects its role as ground cover in at least partly (dry) sunny areas, possibly in fern savannah-like habitats, with adaptations to survive drought stress. Finds of Ruffordia in northern Gondwana extend the wide palaeogeographic range of this taxon. © 2014 Elsevier Ltd.

Anemiaceae; Cicatricosporites; Crato Formation; Gondwana; Lower Cretaceous; Ruffordiaspora

Brazil; Anemia (fern); Filicophyta; Polypodiaceae; Schizaeaceae; Cretaceous; Gondwana; growth; identification method; morphology; paleobotany; paleogeography; phylogeny; plant; taxonomy

2-s2.0-84919946904

Marques-de-Souza J.; Iannuzzi R.

Marques-de-Souza, Juliane (57190680684); Iannuzzi, Roberto (6603970107)

57190680684; 6603970107

New occurrences of the genus Ottokaria Zeiller (Cisuralian, Paraná Basin, Brazil)

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2016.08.001

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982275856&doi=10.1016%2fj.revpalbo.2016.08.001&partnerID=40&md5=b994adb50c36defe7c8dad079434b9ca

State University of Roraima (UERR), Brazil; Federal University of Rio Grande do Sul (UFRGS), Geosciences Postgraduate Program, Department of Paleontology and Stratigraphy, Porto Alegre, Brazil

Marques-de-Souza J., State University of Roraima (UERR), Brazil; Iannuzzi R., Federal University of Rio Grande do Sul (UFRGS), Geosciences Postgraduate Program, Department of Paleontology and Stratigraphy, Porto Alegre, Brazil

New occurrences of Ottokaria fructifications are documented from the Cisuralian of the Paraná Basin, in the states of Santa Catarina and Rio Grande do Sul, Brazil. New occurrences of Ottokaria sanctae-catharinae Dolianiti are reported from the outcrops of the Morro do Papaléo/Faxinal Section (uppermost Itararé Group) and the Rio da Estiva (Paraguaçu Member, Rio Bonito Formation). Specimens designated as Ottokaria minor nov. sp. were recovered from the Itanema II outcrop (Rio Bonito Formation, Siderópolis Member). © 2016 Elsevier B.V.

Cisuralian; Cordaicarpus; Itararé Group; Ottokaria; Paraná Basin; Rio Bonito Formation

Brazil; Itarare; Parana Basin; Rio Grande do Sul; Santa Catarina; Sao Paulo [Brazil]; Katsuwonus pelamis; coniferous tree; fossil record; historical ecology; new genus; outcrop; paleobiogeography; paleobotany; species occurrence

J. Marques-de-Souza; State University of Roraima (UERR), Brazil; email: juliane.marques.souza@gmail.com

Rev. Palaeobot. Palynol.

2-s2.0-84982275856

Conceição D.M.D.; Esperança Júnior M.G.F.; Iannuzzi R.; Recamonde-Mendoza M.; Malta G.B.B.O.

Conceição, Domingas Maria da (57189657696); Esperança Júnior, Mário G.F. (57216754453); Iannuzzi, Roberto (6603970107); Recamonde-Mendoza, Mariana (37020698500); Malta, Guilherme B.B.O. (58003217700)

57189657696; 57216754453; 6603970107; 37020698500; 58003217700

PaleoWood: A machine learning approach for determining the affinity of Paleozoic gymnosperm woods

Journal of South American Earth Sciences

10.1016/j.jsames.2022.104125

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143892704&doi=10.1016%2fj.jsames.2022.104125&partnerID=40&md5=1839937be7d14f2a26e852ac8aeba313

Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil; Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Rua Cel. Antônio Luíz, 116, Crato, Brazil; Departamento de Geologia, Universidade Federal do Ceará, Parquelândia, Fortaleza, Brazil; Instituto de Informática, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil

Conceição D.M.D., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil, Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Rua Cel. Antônio Luíz, 116, Crato, Brazil; Esperança Júnior M.G.F., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil, Departamento de Geologia, Universidade Federal do Ceará, Parquelândia, Fortaleza, Brazil; Iannuzzi R., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil; Recamonde-Mendoza M., Instituto de Informática, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil; Malta G.B.B.O., Instituto de Informática, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves, Porto Alegre, 9500, Brazil

Fossil plant remains are commonly found in fragments in the sediment, thus complicating the reconstruction and classification of fossil plants into a higher taxonomic group. Particularly for stem anatomy, some described features repeat among the proposed lineages due to environmental pressures that induce anatomical convergence. Other characteristics cannot always be seen because of the fossil's state of preservation, as often happens with the bark and the arrangement of axes and leaves. Given these difficulties, we developed PaleoWood, an unprecedented affinity classifier for Paleozoic gymnosperm woods based on 16 variables collected from 42 consistent genera that have the central core, primary xylem, and secondary xylem described. Similarities among samples were analyzed by principal coordinates, and models were trained through logistic regression, linear discriminant, and k-nearest neighbors algorithms. Models' performance was estimated by cross-validation and testing of the affinity of 20 previously known samples. Results agreed with some hypotheses previously discussed in the literature, such as the linkage of Eristophyton, Megaloxylon, and Tetrastichia with Lyginopteridales. Some other predictions were interpreted to be a result of convergent evolution or the models' limitations, especially those predictions relating to the samples of simple protostele or pycnoxylic pteridosperms (but these models are not definitive and may be improved as new data are collected). Therefore, they could assist in future comparisons and discussions about the taxonomy, evolution, and paleobotanical affinities of the basal seed plants, especially for the woods from Gondwana, in which affinities are obscure for several genera. © 2022 Elsevier Ltd

Classifier; Paleobotany; Plant evolution; Plant taxonomy; Wood anatomy

classification; convergent evolution; fossil; gymnosperm; machine learning; paleobotany; Paleozoic; prediction; taxonomy; wood

D.M.D. Conceição; Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Crato, Rua Cel. Antônio Luíz, 116, Brazil; email: domingas.paleonto@gmail.com

J. South Am. Earth Sci.

2-s2.0-85143892704

Paisani J.C.; Paisani S.D.L.; Osterrieth M.L.; Pontelli M.E.; Fujita R.H.

Paisani, Julio Cesar (23480576500); Paisani, Sani Daniela Lopes (56180108200); Osterrieth, Margarita Luisa (6602935194); Pontelli, Marga Eliz (25522264800); Fujita, Rafaela Harumi (35198029100)

23480576500; 56180108200; 6602935194; 25522264800; 35198029100

Dynamics of colluvium ramp on the surface of Palmas/Água Doce during the Late Quaternary - Bases to understand the evolution slopes in the Araucarias Plateau; [Dinâmica de rampa de colúvio na superfície de palmas/água doce durante o quaternário tardio - Bases para compreender a evolução das encostas no planalto das araucárias]

Revista Brasileira de Geomorfologia

10.20502/rbg.v18i4.1247

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040542508&doi=10.20502%2frbg.v18i4.1247&partnerID=40&md5=49886c51ae6c01c4e0239b9d97123951

Departamento de Geografia, Universidade Estadual do Oeste do Paraná, Rua Maringá 1.200, Francisco Beltrão, Paraná, CEP 85.605.010, Brazil; Instituto de Geologia de Costas y del Cuaternario, Universidad Nacional de Mar del Plata, C. C. 722. Funes 3350, Cx Postal 772, Mar del Plata, CEP: 7600, Argentina

Paisani J.C., Departamento de Geografia, Universidade Estadual do Oeste do Paraná, Rua Maringá 1.200, Francisco Beltrão, Paraná, CEP 85.605.010, Brazil; Paisani S.D.L., Departamento de Geografia, Universidade Estadual do Oeste do Paraná, Rua Maringá 1.200, Francisco Beltrão, Paraná, CEP 85.605.010, Brazil; Osterrieth M.L., Instituto de Geologia de Costas y del Cuaternario, Universidad Nacional de Mar del Plata, C. C. 722. Funes 3350, Cx Postal 772, Mar del Plata, CEP: 7600, Argentina; Pontelli M.E., Departamento de Geografia, Universidade Estadual do Oeste do Paraná, Rua Maringá 1.200, Francisco Beltrão, Paraná, CEP 85.605.010, Brazil; Fujita R.H., Departamento de Geografia, Universidade Estadual do Oeste do Paraná, Rua Maringá 1.200, Francisco Beltrão, Paraná, CEP 85.605.010, Brazil

The term colluvium ramp consists of a gently sloping relief unit towards the bottom of the valleys maintained by colluvium, sometimes covering alluvial terraces and hollows or depressions in amphitheater. The present work aimed to determine the dynamics of the colluvium ramp of the Palmas/Água Doce surface along the Late Quaternary, as well as to make considerations about the slope environment on the summit surfaces of the Araucarias Plateau, southern Brazil. The pedostratigraphic analysis was applied in two representative sections of the colluvio ramp materials, as well as the geochronology (14C and LOE methods), carbon isotopic and phytolith analysis. The colluvium ramp revealed a pedostratigraphic record characterized by thin layers of colluvium (horizons Cb), sometimes pedogenized (horizons Ab, ACb, CAb, Bb and BCb), with important gaps and truncations of superficial pedological levels (paleohorizonts A). Low-order drainage valleys bordering the slopes were clogged during successive stages of sedimentation. The morphogenesis was continuous in the analyzed section of the Last Interglacial (Marine Isotopic Stage 3 - MIS 3) to the Holocene (MIS 1). Isotopic and phytolithic signals suggest that environmental stability favoring pedogenesis in the Last Interstate (MIS 3) was detrimental to a relatively cold and humid climate regime. The morphogenesis recorded in the Late Glacial Maximum (MIS 2) was due to a relatively cold and dry climatic regime, marked by a fluctuation phase and a more humid one. Anyway, for the Holocene (MIS 1) the weather was generally warmer and drier. From a regional point of view, the results indicate that: a) colluvial ramps are geomorphic sediment transit units between hills and low valley bottom in the summit surfaces of the Araucaria Plateau; B) its stratigraphic records are thin in the face of recurrent gaps (discontinuities); C) the intense erosive dynamics on the ramps inhibits the accumulation of sediments, on the other hand it allows the closure of funds from neighboring low-order valleys until complete lateral topographic homogenization; D) in these valleys bottoms are the main stratigraphic records that document phases of pedogenesis and morphogenesis both in the slope environment and in the low order fluvial environment linked to ramp; E) paleohorizonts humic A buried (Ab), linked to the phase of last glacial maximum pedogenesis, may be preserved in both environments.

Carbon isotope; Phytolith; Slope; Valley Paleobottom

Uniao Brasileira de Geomorfologia

Rev. Bras. Geomorfol.

All Open Access; Gold Open Access

2-s2.0-85040542508

Uhl D.; Spiekermann R.; Wuttke M.; Poschmann M.J.; Jasper A.

Uhl, Dieter (56275118900); Spiekermann, Rafael (56925270700); Wuttke, Michael (7003844106); Poschmann, Markus J. (6602792965); Jasper, André (7003460953)

56275118900; 56925270700; 7003844106; 6602792965; 7003460953

Wildfires during the Paleogene (late Eocene–late Oligocene) of the Neuwied Basin (W-Germany)

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2021.104565

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119586574&doi=10.1016%2fj.revpalbo.2021.104565&partnerID=40&md5=f37051f5fb16f7c4e214d70125655f39

Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – UNIVATES (PPGAD/UNIVATES), Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil; Generaldirektion Kulturelles Erbe RLP, Direktion Landesarchäologie/Abteilung Erdgeschichte, Niederberger Höhe 1, Koblenz, 56077, Germany

Uhl D., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany, Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – UNIVATES (PPGAD/UNIVATES), Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil; Spiekermann R., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Wuttke M., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Poschmann M.J., Generaldirektion Kulturelles Erbe RLP, Direktion Landesarchäologie/Abteilung Erdgeschichte, Niederberger Höhe 1, Koblenz, 56077, Germany; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – UNIVATES (PPGAD/UNIVATES), Avenida Avelino Talini 171, Lajeado, 95914-014, Rio Grande do Sul, Brazil

Macro-charcoal from late Eocene–late Oligocene deposits of the Neuwied Basin in W-Germany provides evidence for the occurrence of palaeo-wildfires in three different time-slices in this region. (Par-)Autochthonous macro-charcoal from lignites of the late Eocene Bubenheim Formation of the locality Koblenz-Metternich can best be compared to the genus Doliostroboxylon Dolezych, the wood of the extinct conifer genus Doliostrobus Marion. Small, unidentifiable charcoal fragments from the early Oligocene Maifeld Formation of the locality Kärlich have been discovered in limnic/brackish deposits. Due to the small size of the fragments, as well as their general bad preservation it is not possible to provide any meaningful interpretation of the source vegetation. Macro-charcoal from a lignitic lens within the late Oligocene Kärlich Formation of the locality Koblenz-Schmidtenhöhe can be assigned to taxodioid? Cupressaceae. Like other late Oligocene charcoals assigned to this plant group from the nearby Westerwald region, these remains exhibit marked growth rings, pointing to some kind of seasonality. These findings, together with previous records of charcoal from adjacent areas, demonstrate that wildfires, an important source of disturbance in terrestrial ecosystems since the late Silurian, were part of late Eocene to late Oligocene ecosystems in the Neuwied Basin and/or its direct vicinity. © 2021 Elsevier B.V.

Cf. Doliostroboxylon; Charcoal; Eocene; Oligocene; Seasonality; Taxodioid Cupressaceae

Germany; Koblenz; Rhineland-Palatinate; Westerwald; Coniferophyta; Cupressaceae; coniferous tree; Eocene-Oligocene boundary; paleobiology; paleobotany; preservation; wildfire

D. Uhl; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Senckenberganlage 25, 60325, Germany; email: dieter.uhl@senckenberg.de

Rev. Palaeobot. Palynol.

2-s2.0-85119586574

Coe H.H.G.; Ramos Y.B.M.; dos Santos C.P.; Carvalho da Silva A.L.; Silvestre C.P.; Borrelli N.; de Oliveira Furtado de Sousa L.

Coe, Heloisa Helena Gomes (36165424600); Ramos, Yame Bronze Medina (56890943700); dos Santos, Cátia Pereira (56890540700); Carvalho da Silva, André Luiz (56245570300); Silvestre, Carolina Pereira (56890668700); Borrelli, Natalia (23102178300); de Oliveira Furtado de Sousa, Leandro (16836208400)

36165424600; 56890943700; 56890540700; 56245570300; 56890668700; 23102178300; 16836208400

Dynamics of production and accumulation of phytolith assemblages in the Restinga of Maricá, Rio De Janeiro, Brazil

Quaternary International

10.1016/j.quaint.2015.10.071

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955320223&doi=10.1016%2fj.quaint.2015.10.071&partnerID=40&md5=6f7d0e1dbef4155cc5c5e14cffa7b2ed

Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, Departamento de Geografia, Rua Dr. Francisco Portela, 1470, São Gonçalo, Rio de Janeiro, 24435-005, Brazil; Programa de Pós-Graduação em Dinâmica dos Oceanos e da Terra, Departamento de Geologia da Universidade Federal Fluminense, Av. Gen. Milton Tavares de Souza s/nº, Niterói, Rio de Janeiro, 24210-346, Brazil; Instituto de Investigaciones Marinas y Costeras, CONICET-UNMdP, Instituto de Geología de Costas y del Cuaternario, FCEyN-UNMdP, Mar del Plata, Provincia de Buenos Aires, Argentina; Universidade Federal Rural do Semi-Árido, Departamento de Ciências Vegetais, Av. Francisco Mota, 572, Mossoró, 59.625-900, Rio Grande do Norte, Brazil

Coe H.H.G., Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, Departamento de Geografia, Rua Dr. Francisco Portela, 1470, São Gonçalo, Rio de Janeiro, 24435-005, Brazil, Programa de Pós-Graduação em Dinâmica dos Oceanos e da Terra, Departamento de Geologia da Universidade Federal Fluminense, Av. Gen. Milton Tavares de Souza s/nº, Niterói, Rio de Janeiro, 24210-346, Brazil; Ramos Y.B.M., Programa de Pós-Graduação em Dinâmica dos Oceanos e da Terra, Departamento de Geologia da Universidade Federal Fluminense, Av. Gen. Milton Tavares de Souza s/nº, Niterói, Rio de Janeiro, 24210-346, Brazil; dos Santos C.P., Programa de Pós-Graduação em Dinâmica dos Oceanos e da Terra, Departamento de Geologia da Universidade Federal Fluminense, Av. Gen. Milton Tavares de Souza s/nº, Niterói, Rio de Janeiro, 24210-346, Brazil; Carvalho da Silva A.L., Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, Departamento de Geografia, Rua Dr. Francisco Portela, 1470, São Gonçalo, Rio de Janeiro, 24435-005, Brazil; Silvestre C.P., Programa de Pós-Graduação em Dinâmica dos Oceanos e da Terra, Departamento de Geologia da Universidade Federal Fluminense, Av. Gen. Milton Tavares de Souza s/nº, Niterói, Rio de Janeiro, 24210-346, Brazil; Borrelli N., Instituto de Investigaciones Marinas y Costeras, CONICET-UNMdP, Instituto de Geología de Costas y del Cuaternario, FCEyN-UNMdP, Mar del Plata, Provincia de Buenos Aires, Argentina; de Oliveira Furtado de Sousa L., Universidade Federal Rural do Semi-Árido, Departamento de Ciências Vegetais, Av. Francisco Mota, 572, Mossoró, 59.625-900, Rio Grande do Norte, Brazil

The Maricá “restinga”, located on the eastern part of Rio de Janeiro State (Brazil), corresponds to one of the few remaining preserved areas of the state's coastal plain. This coastline presents two sand barriers separated by a depression where there is a freshwater swamp and different plant communities distributed in areas of high ecological diversity accompanying the local topography and the range of marine spray. This paper is a study of the soil phytolith assemblages in the Maricá restinga, with the intent of establishing reference collections for paleoenvironmental studies of this coastal area during the Quaternary. Phytoliths were chosen as proxies, but their use for reconstruction of this type of vegetation is pioneer research, so it was essential to characterize the phytolith assemblages for each plant community through the identification of the main morphotypes and whether or not they are preserved in coastal depositional environments under the effect of geomorphology and salinity. Eight plant communities, distributed almost parallel to the coastline over sandy barriers, lagoonal plain, lagoon margin and weathered basement were identified: Halophile-psamophile, near the beach; two Scrub communities, one over the Holocene barrier and the other over the Pleistocene barrier; two Herbaceous swamps, one between the two sand barriers, the other behind the Pleistocene barrier; Slack, in front of the Pleistocene barrier; Shrubby vegetation on the shore of Maricá lagoon and Dry forest, over the weathered Pre-Cambrian basement. In general, it was found that this type of environment is not very favorable for the formation and accumulation of phytoliths. Restinga plants did not prove to be large producers of phytoliths, except those known as such, as in the case of Poaceae and Cyperaceae. It was also observed that the permanence of phytoliths in sediments is strongly influenced by its particle size and organic matter content. The largest stocks of phytoliths were found in swamp communities, due to the presence of organic matter and low energy dynamics, and in dry forests, where a process of pedogenesis already occurs. Despite the low phytolith stocks present in modern assemblages, they show a high degree of conservation, which enabled significant results for the study of this type of vegetation. The calculated phytolith indices (tree density and water stress) consistently expressed, in detail, the environment of each community analyzed from the point of view of the type of vegetation cover and the conditions of water availability to plants. © 2015 Elsevier Ltd and INQUA

Brazil; Paleoenvironmental studies; Phytoliths; Restinga plant communities

Brazil; Marica; Rio de Janeiro [Brazil]; Cyperaceae; Poaceae; coastal zone; morphotype; paleobotany; paleoenvironment; paleotopography; phytolith; plant community; Pleistocene-Holocene boundary; reconstruction

H.H.G. Coe; Faculdade de Formação de Professores da Universidade do Estado do Rio de Janeiro, Departamento de Geografia, Rio de Janeiro, Rua Dr. Francisco Portela, 1470, São Gonçalo, 24435-005, Brazil; email: heloisacoe@yahoo.com

All Open Access; Green Open Access

2-s2.0-84955320223

Sauquet H.; Von Balthazar M.; Magallón S.; Doyle J.A.; Endress P.K.; Bailes E.J.; Barroso De Morais E.; Bull-Hereñu K.; Carrive L.; Chartier M.; Chomicki G.; Coiro M.; Cornette R.; El Ottra J.H.L.; Epicoco C.; Foster C.S.P.; Jabbour F.; Haevermans A.; Haevermans T.; Hernández R.; Little S.A.; Löfstrand S.; Luna J.A.; Massoni J.; Nadot S.; Pamperl S.; Prieu C.; Reyes E.; Dos Santos P.; Schoonderwoerd K.M.; Sontag S.; Soulebeau A.; Staedler Y.; Tschan G.F.; Wing-Sze Leung A.; Schönenberger J.

Sauquet, Hervé (6603276949); Von Balthazar, Maria (6602418289); Magallón, Susana (6507341460); Doyle, James A. (7403327414); Endress, Peter K. (7003879766); Bailes, Emily J. (56708556400); Barroso De Morais, Erica (57195277378); Bull-Hereñu, Kester (8641159700); Carrive, Laetitia (56624594800); Chartier, Marion (53163285800); Chomicki, Guillaume (55856349900); Coiro, Mario (55750488000); Cornette, Raphaël (6506350460); El Ottra, Juliana H. L. (36554049300); Epicoco, Cyril (57195286640); Foster, Charles S. P. (55902471000); Jabbour, Florian (24076368100); Haevermans, Agathe (55535817600); Haevermans, Thomas (6506786721); Hernández, Rebeca (57349331100); Little, Stefan A. (7102631323); Löfstrand, Stefan (56048522400); Luna, Javier A. (56195325300); Massoni, Julien (55878324200); Nadot, Sophie (6602798835); Pamperl, Susanne (51562375100); Prieu, Charlotte (35424354600); Reyes, Elisabeth (56689380000); Dos Santos, Patrícia (55856023100); Schoonderwoerd, Kristel M. (57188743661); Sontag, Susanne (37007021400); Soulebeau, Anaëlle (56664407000); Staedler, Yannick (6507230605); Tschan, Georg F. (24466906100); Wing-Sze Leung, Amy (57195277866); Schönenberger, Jürg (6602814752)

6603276949; 6602418289; 6507341460; 7403327414; 7003879766; 56708556400; 57195277378; 8641159700; 56624594800; 53163285800; 55856349900; 55750488000; 6506350460; 36554049300; 57195286640; 55902471000; 24076368100; 55535817600; 6506786721; 57349331100; 7102631323; 56048522400; 56195325300; 55878324200; 6602798835; 51562375100; 35424354600; 56689380000; 55856023100; 57188743661; 37007021400; 56664407000; 6507230605; 24466906100; 57195277866; 6602814752

The ancestral flower of angiosperms and its early diversification

Nature Communications

10.1038/ncomms16047

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026789592&doi=10.1038%2fncomms16047&partnerID=40&md5=5f15118c422da737a542aab2af1177ae

Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Instituto de Biología, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México City, 04510, Mexico; Department of Evolution and Ecology, University of California, Davis, 95616, CA, United States; Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, 8008, Switzerland; School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, United Kingdom; Departamento de Ecología, Pontificia Universidad Católica de Chile, Alameda 340, Santiago, Chile; Systematic Botany and Mycology, Department of Biology, University of Munich LMU, Munich, 80638, Germany; Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; Laboratório de Sistemática Vegetal, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277. Cidade Universitária, São Paulo, 05508-090, Brazil; School of Life and Environmental Sciences, University of Sydney, Sydney, 2006, NSW, Australia; Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, United Kingdom; Institute of Microbiology, ETH Zurich, Zurich, 8093, Switzerland; Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisboa, 1749-016, Portugal; Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, 02138, MA, United States; Department of Plant and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, Göteborg, 413 19, Sweden; School of Biological Sciences, University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong

Sauquet H., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Von Balthazar M., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Magallón S., Instituto de Biología, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México City, 04510, Mexico; Doyle J.A., Department of Evolution and Ecology, University of California, Davis, 95616, CA, United States; Endress P.K., Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, 8008, Switzerland; Bailes E.J., School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, United Kingdom; Barroso De Morais E., Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, 8008, Switzerland; Bull-Hereñu K., Departamento de Ecología, Pontificia Universidad Católica de Chile, Alameda 340, Santiago, Chile; Carrive L., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Chartier M., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Chomicki G., Systematic Botany and Mycology, Department of Biology, University of Munich LMU, Munich, 80638, Germany; Coiro M., Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, 8008, Switzerland; Cornette R., Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; El Ottra J.H.L., Laboratório de Sistemática Vegetal, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277. Cidade Universitária, São Paulo, 05508-090, Brazil; Epicoco C., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Foster C.S.P., School of Life and Environmental Sciences, University of Sydney, Sydney, 2006, NSW, Australia; Jabbour F., Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; Haevermans A., Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; Haevermans T., Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; Hernández R., Instituto de Biología, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacán, México City, 04510, Mexico; Little S.A., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Löfstrand S., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Luna J.A., Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, United Kingdom; Massoni J., Institute of Microbiology, ETH Zurich, Zurich, 8093, Switzerland; Nadot S., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Pamperl S., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Prieu C., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Reyes E., Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; Dos Santos P., Centre for Ecology, Evolution and Environmental Changes, Faculdade de Ciências, Universidade de Lisboa, Lisboa, 1749-016, Portugal; Schoonderwoerd K.M., Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, 02138, MA, United States; Sontag S., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Soulebeau A., Institut de Systématique, Evolution, Biodiversité, Muséum National d'Histoire Naturelle, UMR 7205 ISYEB MNHN/CNRS/UPMC/EPHE, 57 rue Cuvier, CP39, Paris, 75005, France; Staedler Y., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria; Tschan G.F., Department of Plant and Environmental Sciences, University of Gothenburg, Carl Skottsbergs gata 22B, Göteborg, 413 19, Sweden; Wing-Sze Leung A., School of Biological Sciences, University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong; Schönenberger J., Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, Vienna, 1030, Austria

Recent advances in molecular phylogenetics and a series of important palaeobotanical discoveries have revolutionized our understanding of angiosperm diversification. Yet, the origin and early evolution of their most characteristic feature, the flower, remains poorly understood. In particular, the structure of the ancestral flower of all living angiosperms is still uncertain. Here we report model-based reconstructions for ancestral flowers at the deepest nodes in the phylogeny of angiosperms, using the largest data set of floral traits ever assembled. We reconstruct the ancestral angiosperm flower as bisexual and radially symmetric, with more than two whorls of three separate perianth organs each (undifferentiated tepals), more than two whorls of three separate stamens each, and more than five spirally arranged separate carpels. Although uncertainty remains for some of the characters, our reconstruction allows us to propose a new plausible scenario for the early diversification of flowers, leading to new testable hypotheses for future research on angiosperms. © The Author(s) 2017.

Biological Evolution; Flowers; Magnoliopsida; Phenotype; Phylogeny; Magnoliophyta; angiosperm; data set; divergence; floral trait; molecular analysis; morphology; paleobotany; phylogenetics; phylogeny; reconstruction; research work; angiosperm; bisexuality; carpel; nonhuman; organ; phylogeny; stamen; uncertainty; anatomy and histology; angiosperm; evolution; flower; phenotype

H. Sauquet; Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, CNRS UMR 8079, Orsay, 91405, France; email: herve.sauquet@u-psud.fr

Nature Publishing Group

All Open Access; Gold Open Access

2-s2.0-85026789592

Francisquini M.I.; Lima C.M.; Pessenda L.C.R.; Rossetti D.F.; França M.C.; Cohen M.C.L.

Francisquini, M.I. (55427393300); Lima, C.M. (56235103300); Pessenda, L.C.R. (6603793283); Rossetti, D.F. (7006267742); França, M.C. (24280927300); Cohen, M.C.L. (7405990646)

55427393300; 56235103300; 6603793283; 7006267742; 24280927300; 7405990646

Relation between carbon isotopes of plants and soils on Marajó Island, a large tropical island: Implications for interpretation of modern and past vegetation dynamics in the Amazon region

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2014.03.032

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84910028042&doi=10.1016%2fj.palaeo.2014.03.032&partnerID=40&md5=eb2a1f65b7190f055fb3dc373f260e6f

Universidade de São Paulo, Laboratório C, Avenida Centenário 303, Piracicaba, SP, 13416000, Brazil; Instituto Nacional de Pesquisas Espaciais-INPE, Rua dos Astronautas 1758-CP 515, São José dos Campos, SP, 12245-970, Brazil; Federal Institute of Pará, Av. Almirante Barroso 1155, Marco, Belém, PA, CEP: 66090-000, Brazil; Federal University of Pará, Av. Perimentral 2651, Terra Firme, Belém, PA, CEP: 66077-530, Brazil

Francisquini M.I., Universidade de São Paulo, Laboratório C, Avenida Centenário 303, Piracicaba, SP, 13416000, Brazil; Lima C.M., Universidade de São Paulo, Laboratório C, Avenida Centenário 303, Piracicaba, SP, 13416000, Brazil; Pessenda L.C.R., Universidade de São Paulo, Laboratório C, Avenida Centenário 303, Piracicaba, SP, 13416000, Brazil; Rossetti D.F., Instituto Nacional de Pesquisas Espaciais-INPE, Rua dos Astronautas 1758-CP 515, São José dos Campos, SP, 12245-970, Brazil; França M.C., Federal Institute of Pará, Av. Almirante Barroso 1155, Marco, Belém, PA, CEP: 66090-000, Brazil; Cohen M.C.L., Federal University of Pará, Av. Perimentral 2651, Terra Firme, Belém, PA, CEP: 66077-530, Brazil

We assess the relation between the contrasting vegetation types of rainforest, open savanna and wooded savanna coexisting in close contact on Marajó Island at the mouth of the Amazon River. Floristic and carbon isotopic characterizations of modern plants were combined with organic matter carbon isotope and grain size records of soil to characterize vegetation evolution at six locations on southeastern and northeastern Marajó Island and its relations to climate changes since the late Pleistocene. C3 plants contribute 100% of the biomass in the rainforest on post-Barreiras sediments (site 1). No significant vegetation changes are evident in these places since at least ~7860calyrB.P. Rainforests on paleochannels (sites 4 and 6) are protected from flooding by slightly elevated sandy levee and have flora very similar to site 1. These forests were formed since the early-mid Holocene after channel abandonment. C3 grasses are predominant in open savanna areas (sites 4, 5 and 6), with less representation in wooded savannas (sites 2 and 3). However, C4 grasses, despite having fewer species, constitute significant biomass in the wooded (~60%) and open savanna vegetation areas, especially during the dry season. The reconstructions of past vegetation together with the distributions of modern vegetation allow prediction that climate changes to drier conditions can significantly influence the future Marajó Island landscape, likely enabling expansion of C4 plants in the flooding zone and of trees in the rainforests. © 2014 Elsevier B.V. All rights reserved.

Carbon isotopes; Marajó Island; Modern vegetation; Paleovegetation; Soil

Amazon River; Brazil; Marajo Island; Para [Brazil]; biomass; carbon isotope; floristics; organic matter; paleobotany; Pleistocene; rainforest; savanna; tropical region; vegetation dynamics

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-84910028042

de Lima F.J.; Sayão J.M.; de Oliveira Ponciano L.C.M.; Weinschütz L.C.; Figueiredo R.G.; Rodrigues T.; Bantim R.A.M.; Saraiva A.Á.F.; Jasper A.; Uhl D.; Kellner A.W.A.

de Lima, Flaviana Jorge (56481285700); Sayão, Juliana Manso (6507916910); de Oliveira Ponciano, Luiza C. M. (55099107000); Weinschütz, Luiz C. (8842522300); Figueiredo, Rodrigo G. (26428124000); Rodrigues, Taissa (26321948800); Bantim, Renan Alfredo Machado (51161111400); Saraiva, Antônio Álamo Feitosa (29567569800); Jasper, André (7003460953); Uhl, Dieter (56275118900); Kellner, Alexander W. A. (7006207027)

56481285700; 6507916910; 55099107000; 8842522300; 26428124000; 26321948800; 51161111400; 29567569800; 7003460953; 56275118900; 7006207027

Wildfires in the campanian of james ross island: A new macro-charcoal record for the antarctic peninsula

10.33265/polar.v40.5487

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118112326&doi=10.33265%2fpolar.v40.5487&partnerID=40&md5=9d27a89452286d25d4d9d0a4f363f7b1

Laboratório de Paleobiologia e Microestruturas, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Vitória de Santo Antão, Pernambuco, Brazil; Laboratory of Antarctic Paleobiology and Paleogeography, National Museum, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Laboratory of Applied Taphonomy and Paleoecology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil; Paleontological Center, University of Contestado, Campus Mafra, Santa Catarina, Brazil; Department of Biology, Federal University of Espírito Santo, Alegre, Espírito Santo, Brazil; Department of Biological Sciences, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil; Laboratory of Paleontology, Regional University of Cariri, Crato, Ceará, Brazil; University of Vale do Taquari, Lajeado, Rio Grande do Sul, Brazil; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany; Senckenberg Centre for Human Evolution and Palaeoenvironment, Eberhard Karls Universität Tübingen, Tübingen, Germany

de Lima F.J., Laboratório de Paleobiologia e Microestruturas, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Vitória de Santo Antão, Pernambuco, Brazil; Sayão J.M., Laboratory of Antarctic Paleobiology and Paleogeography, National Museum, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; de Oliveira Ponciano L.C.M., Laboratory of Applied Taphonomy and Paleoecology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil; Weinschütz L.C., Paleontological Center, University of Contestado, Campus Mafra, Santa Catarina, Brazil; Figueiredo R.G., Department of Biology, Federal University of Espírito Santo, Alegre, Espírito Santo, Brazil; Rodrigues T., Department of Biological Sciences, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil; Bantim R.A.M., Laboratory of Paleontology, Regional University of Cariri, Crato, Ceará, Brazil; Saraiva A.Á.F., Laboratory of Paleontology, Regional University of Cariri, Crato, Ceará, Brazil; Jasper A., University of Vale do Taquari, Lajeado, Rio Grande do Sul, Brazil, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany; Uhl D., University of Vale do Taquari, Lajeado, Rio Grande do Sul, Brazil, Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Germany, Senckenberg Centre for Human Evolution and Palaeoenvironment, Eberhard Karls Universität Tübingen, Tübingen, Germany; Kellner A.W.A., Laboratory of Antarctic Paleobiology and Paleogeography, National Museum, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil

The Cretaceous “high-fire” period was a global event that reached almost all continental masses during that period in Earth’s history. The extensive wildfires directly affected plant communities. Significant palaeobotanical records in the Antarctic Peninsula have been studied from the James Ross Sub-Basin, espe-cially from the Santa Marta Formation. However, there is no described evidence for palaeo-wildfires in the area so far. Here, we present the first occurrence of fossilized macro-charcoal coming from James Ross Island, confirming that palaeo-wildfires occurred in the Campanian vegetation preserved in the Santa Marta Formation. The new charcoal material has a gymnospermous taxonomic affinity, more specifically with the Araucariaceae, which is in accordance with previous palaeobotanical records from James Ross Island. This occurrence adds new information to the construction of the palaeo-wildfire scenario for Gondwana. © 2021 F.J. De Lima et al.

Charcoal; Cretaceous; Cretaceous high-fire; Gondwana; Palaeo-wildfires; Southern Hemisphere

Antarctica; James Ross Island; West Antarctica; Araucariaceae; Campanian; charcoal; Cretaceous; fossil assemblage; fossil record; Gondwana; paleobotany; wildfire

F.J. de Lima; Laboratório de Paleobiologia e Microestruturas, Universidade Federal de Pernambuco, Centro Acadêmico de Vitória, Vitória de Santo Antão, Pernambuco, Rua do Alto Reservatório s/n, Bela Vista, 55608-680, Brazil; email: flavianajorge@gmail.com

Norwegian Polar Institute

All Open Access; Gold Open Access

2-s2.0-85118112326

Absy M.L.; Cleef A.M.; Dapolito C.; Da Silva M.F.F.

Absy, Maria Lúcia (6603106546); Cleef, Antoine M. (6603900369); Dapolito, Carlos (37007274900); Da Silva, Manoela F.F. (29367485900)

6603106546; 6603900369; 37007274900; 29367485900

Palynological differentiation of savanna types in Carajás, Brazil (southeastern Amazonia)

10.1080/01916122.2013.842189

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899493800&doi=10.1080%2f01916122.2013.842189&partnerID=40&md5=fcb78a05bff4b2a9c3ca9a88593794b6

Coordination of Biodiversity, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil; Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston Birmingham B15 2TT, United Kingdom; Museu Paraense Emílio Goeldi (MPEG), Belém, Brazil

Absy M.L., Coordination of Biodiversity, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil; Cleef A.M., Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands; Dapolito C., Coordination of Biodiversity, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil, School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston Birmingham B15 2TT, United Kingdom; Da Silva M.F.F., Museu Paraense Emílio Goeldi (MPEG), Belém, Brazil

Pollen rain studies in Amazonia are scarce but of utmost importance to support interpretations of pollen records. We have investigated modern surface pollen spectra and vegetation in an Amazon location, Carajás, Brazil, where open and woody types of vegetation, swamps and lakes develop under rock outcrops. Both plant inventories of different savanna types along with bryophytic surface samples were analysed with ecological ordination. The results point to taxa that can be used in the differentiation of dry and flooded systems within the savannas studied. Dry savannas, either open or wooded, are indicated by the herbs Cuphea, Asteraceae, Borreria, Caryophyllaceae and Polygonaceae, and by woody taxa such as Myrtaceae, Byrsonima, Sapotaceae, Neea and Rubiaceae. Flooded savannas (swamps) and lakes are indicated by herbs like Sagittaria, Montrichardia, Nymphaea, Cyperaceae and Mimosa and palms. Poaceae was found to have a bipolar signature, and using it as an indicator should be done with caution. © 2014 © 2014 AASP - The Palynological Society.

Amazonia; Brazil; Caraj́as; pollen rain; savanna

Amazonia; Brazil; Carajas; Para [Brazil]; herb; outcrop; paleobotany; palynology; savanna

M.L. Absy; Coordination of Biodiversity, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil; email: lucia.absy@gmail.com

American Association of Stratigraphic Palynologists

2-s2.0-84899493800

Spiekermann R.; Jasper A.; Pozzebon-Silva Â.; Carniere J.S.; Benício J.R.W.; Guerra-Sommer M.; Uhl D.

Spiekermann, Rafael (56925270700); Jasper, André (7003460953); Pozzebon-Silva, Ândrea (57219788166); Carniere, Júlia Siqueira (57433555100); Benício, José Rafael W. (56925551800); Guerra-Sommer, Margot (6602534370); Uhl, Dieter (56275118900)

56925270700; 7003460953; 57219788166; 57433555100; 56925551800; 6602534370; 56275118900

Small but not trivial: Nothostigma sepeensis sp. nov., a lycopsid from the Cisuralian (early Permian) of the Paraná Basin, Brazil

Journal of South American Earth Sciences

10.1016/j.jsames.2022.104188

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145234524&doi=10.1016%2fj.jsames.2022.104188&partnerID=40&md5=ffaed4967ef8c9f2c49590cad2233815

Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt Am Main, 60325, Germany; Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil; Instituto de Geociências, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves 9500, Rio Grande do Sul, Porto Alegre, 91509-900, Brazil

Spiekermann R., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt Am Main, 60325, Germany; Jasper A., Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil; Pozzebon-Silva Â., Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil; Carniere J.S., Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil; Benício J.R.W., Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil; Guerra-Sommer M., Instituto de Geociências, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves 9500, Rio Grande do Sul, Porto Alegre, 91509-900, Brazil; Uhl D., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt Am Main, 60325, Germany, Programa de Pós-Graduação Em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, Rio Grande do Sul, Lajeado, 95914-014, Brazil

This study deals with lycopsid axes from Cisuralian strata of the São Sepé outcrop in southern Brazil, belonging to the Glossopteris flora. Their gross morphology is described using standard palaeobotanical techniques. They lack cuticles, but the description is complemented using vinyl polysiloxane replicas of their leaf cushions, which reveal imprints of their epidermal features under the scanning electron microscope. The specimens are distinct from other lycopsid fossil-taxa found so far in Permian post-glacial strata including elements of the Glossopteris flora. They resemble Nothostigma Doweld, a common fossil-genus of lycopsids that flourished in Gondwana during the Mississippian pre-glacial stage. Based on their morphology, we propose the new fossil-taxon Nothostigma sepeensis sp. nov., increasing the knowledge of the so far often neglected lycopsid diversity from the Permian of Gondwana. © 2022 Elsevier Ltd

Glossopteris flora; Gondwana; Leaf cushion; Lycopsid; Permian

Parana Basin; fossil record; Gondwana; new genus; new taxon; paleobotany; Permian; species diversity; vascular plant

R. Spiekermann; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt Am Main, Senckenberganlage 25, 60325, Germany; email: rafael.spiekermann@senckenberg.de

J. South Am. Earth Sci.

2-s2.0-85145234524

Granier B.; Bucur I.I.; Dias-Brito D.

Granier, Bruno (7003430989); Bucur, Ioan I. (7003872560); Dias-Brito, Dimas (22633781700)

7003430989; 7003872560; 22633781700

About Trinocladus Raineri, 1922: when some Permocalculus (Gymnocodiacean algae) reveal to be Triploporellacean algae (Revision of the Jesse Harlan Johnson Collection. Part 5)

10.1007/s10347-017-0508-x

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029228387&doi=10.1007%2fs10347-017-0508-x&partnerID=40&md5=e268b96b182f95d6442ae2b16ce5f51c

Dépt. STU, Fac. Sci. Tech, UBO, CS 93837, Brest, 29238, France; Department of Ecology and Evolutionary Biology, The University of Kansas, 1200 Sunnyside Avenue, Lawrence, 66045, KS, United States; Department of Geology and Center for Integrated Geological Studies, Babeş-Bolyai University, M. Kogălniceanu str., 1, Cluj-Napoca, 400084, Romania; Center for Geosciences Applied to Petroleum (UNESPetro) and Departamento de Geologia Aplicada, UNESP-Universidade Estadual Paulista, Av. 24 A, no. 1515, Bela Vista, Caixa Postal 178, Rio Claro, CEP 13506-900, SP, Brazil

Granier B., Dépt. STU, Fac. Sci. Tech, UBO, CS 93837, Brest, 29238, France, Department of Ecology and Evolutionary Biology, The University of Kansas, 1200 Sunnyside Avenue, Lawrence, 66045, KS, United States; Bucur I.I., Department of Geology and Center for Integrated Geological Studies, Babeş-Bolyai University, M. Kogălniceanu str., 1, Cluj-Napoca, 400084, Romania; Dias-Brito D., Center for Geosciences Applied to Petroleum (UNESPetro) and Departamento de Geologia Aplicada, UNESP-Universidade Estadual Paulista, Av. 24 A, no. 1515, Bela Vista, Caixa Postal 178, Rio Claro, CEP 13506-900, SP, Brazil

The Upper Cretaceous-Paleogene genus Trinocladus that is based on T. tripolitanus Raineri, 1922, originally described from Libyan material, is morphologically well constrained. Its species are commonly distinguished on the basis of their biometrics. However, the narrow Gaussian distribution reported for some measurements may result from post-mortem dynamic sorting as suggested by a review of the surrounding microfacies. An examination of Brazilian material of the type-species suggests a slightly club-shaped thallus morphology. Two “false Permocalculus” species originally described by Johnson and the type-material of which has been reexamined are formally reascribed to the genus Trinocladus. T. budaensis, the smallest one, has slightly club-shaped thallus, too. T. elliotti is poorly mineralized and insufficiently documented. In addition to T. tripolitanus, Raineri described a tiny species which was later revised by Pia, i.e., Dissocladella ondulata. D. bonardii, a name recently introduced by Radoičić et al. and which is based on Raineri’s original material, is considered here as an objective junior synonym of D. ondulata. © 2017, Springer-Verlag GmbH Germany.

Biometric limitation; Cretaceous; Dasycladales; Dissocladella; Trinocladus

algae; Dasycladales; Gymnocodiaceae; Triploporellaceae; alga; biometry; Cretaceous-Paleogene boundary; morphology; paleobotany

B. Granier; Dépt. STU, Fac. Sci. Tech, UBO, Brest, CS 93837, 29238, France; email: bgranier@univ-brest.fr

2-s2.0-85029228387

Horn B.L.D.; Pereira V.P.; Schultz C.L.

Horn, B.L.D. (53263944500); Pereira, V.P. (7005616994); Schultz, C.L. (7202476487)

53263944500; 7005616994; 7202476487

Calcretes of the Santa Maria Supersequence, Middle Triassic, Rio Grande do Sul, Brazil: Classification, genesis and paleoclimatic implications

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2013.02.013

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875911884&doi=10.1016%2fj.palaeo.2013.02.013&partnerID=40&md5=b6db7ea0b4280d20fd9b38c4e51c2d56

Instituto de Geociências, Universidade Federal do Rio Grande do Sul, 9500, Porto Alegre (RS), Av. Bento Gonçalves, Brazil

Horn B.L.D., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, 9500, Porto Alegre (RS), Av. Bento Gonçalves, Brazil; Pereira V.P., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, 9500, Porto Alegre (RS), Av. Bento Gonçalves, Brazil; Schultz C.L., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, 9500, Porto Alegre (RS), Av. Bento Gonçalves, Brazil

Carbonate concretions are common features in arid and semi-arid climates. They can be formed under pedogenic conditions, developing complex profiles with or without biogenic contribution or in groundwater conditions, forming thick massive beds of carbonate. Together with other data, calcretes can be used as tools for paleoclimatic and paleoenvironmental interpretation. In Southern Brazil, the Triassic Santa Maria Supersequence (Sequences I and II) includes four types of calcretes with distinct modes of formation: a) precipitation of carbonate in the oscillation zone of the phreatic level, with posterior overlap of vadose and phreatic diagenetic processes; b) precipitation of pedogenic carbonate, forming crusts in the paleosol; c) precipitation of carbonate forming concentric concretions in the stable phreatic level; and d) preservation of root casts due to processes of precipitation in the oscillation zone of the phreatic level. The presence of silica minerals and barite in the concretions is attributed to seasonal changes in water table level. Due to the high evaporation rate in semi-arid climates, the most compatible process of formation of these calcretes is the per ascensum model. Integration of calcrete data with the sedimentological and paleontological framework allowed a refinement of paleoclimatic data, suggesting that, despite the scarcity of plant fossils, the Middle Triassic in Southern Brazil was vegetated with plants.© 2013 Elsevier B.V.

Calcretes; Paleoclimate; Paleosol; Triassic

Brazil; Rio Grande do Sul; calcrete; fossil record; paleobotany; paleoclimate; paleoenvironment; paleontology; paleosol; pedogenesis; Triassic

B.L.D. Horn; Instituto de Geociências, Universidade Federal do Rio Grande do Sul, 9500, Porto Alegre (RS), CEP: 91501-970, Av. Bento Gonçalves, Brazil; email: brunoldhorn@gmail.com

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-84875911884

Spiekermann R.; Uhl D.; Benício J.R.W.; Guerra-Sommer M.; Jasper A.

Spiekermann, Rafael (56925270700); Uhl, Dieter (56275118900); Benício, José Rafael Wanderley (56925551800); Guerra-Sommer, Margot (6602534370); Jasper, André (7003460953)

56925270700; 56275118900; 56925551800; 6602534370; 7003460953

A remarkable mass-assemblage of lycopsid remains from the Rio Bonito Formation, lower Permian of the Paraná Basin, Rio Grande do Sul, Brazil

Palaeobiodiversity and Palaeoenvironments

10.1007/s12549-018-0318-3

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045137383&doi=10.1007%2fs12549-018-0318-3&partnerID=40&md5=fd7eb9b8b29d739c6c3f298232d14425

Universidade do Vale do Taquari – Univates, Lajeado, Rio Grande do Sul, Brazil; Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, Germany; Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil

Spiekermann R., Universidade do Vale do Taquari – Univates, Lajeado, Rio Grande do Sul, Brazil; Uhl D., Universidade do Vale do Taquari – Univates, Lajeado, Rio Grande do Sul, Brazil, Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, Germany; Benício J.R.W., Universidade do Vale do Taquari – Univates, Lajeado, Rio Grande do Sul, Brazil; Guerra-Sommer M., Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil; Jasper A., Universidade do Vale do Taquari – Univates, Lajeado, Rio Grande do Sul, Brazil, Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, Germany

Arborescent and sub-arborescent lycopsids are important floristic elements of the Brazilian early Permian post-glacial environments. However, the taxonomy and systematic position as well as the biology and ecology of these plants are poorly understood. The present study describes a remarkable assemblage of Brasilodendron cf. pedroanum axes preserved in the plant bearing sub-level N8b of the Morro do Papaléo outcrop, Rio Bonito Formation, early Permian of the Paraná Basin, Rio Grande do Sul state, Brazil. These axes are massively concentrated, without any preferential depositional orientation, forming a monotypical assemblage. They are unbranched and preserved as impressions. Three morphological patterns, occurring on distinct axes, were described for leaf cushions. This mass-assemblage is probably a result of allochthonous deposition and hydraulic size-sorting. The massive concentration of B. cf. pedroanum suggests that this fossil taxon was an important floristic element somewhere in the upstream area of the braided river system studied here. © 2018, Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany, part of Springer Nature.

Brasilodendron pedroanum; Glossopteris flora; Leaf cushion morphology; Morro do Papaléo outcrop; Western Gondwana lycopsids

Brazil; Parana Basin; Rio Grande do Sul; Glossopteris; Katsuwonus pelamis; Lycopodiopsida; fossil record; Gondwana; leaf morphology; outcrop; paleobotany; Permian; Postglacial; taxonomy; vascular plant

A. Jasper; Universidade do Vale do Taquari – Univates, Lajeado, Brazil; email: ajasper@univates.br

Palaeobiodiversity Palaeoenvironments

2-s2.0-85045137383

Maffezzoli N.; Cook E.; Van Der Bilt W.G.M.; Storen E.N.; Festi D.; Muthreich F.; Seddon A.W.R.; Burgay F.; Baccolo G.; Mygind A.R.F.; Petersen T.; Spolaor A.; Vascon S.; Pelillo M.; Ferretti P.; Dos Reis R.S.; Simões J.C.; Ronen Y.; Delmonte B.; Viccaro M.; Steffensen J.P.; Dahl-Jensen D.; Nisancioglu K.H.; Barbante C.

Maffezzoli, Niccolo (56572851100); Cook, Eliza (34973861400); Van Der Bilt, Willem G. M. (54882427000); Storen, Eivind N. (36174683100); Festi, Daniela (43960965300); Muthreich, Florian (57215021688); Seddon, Alistair W. R. (43061412700); Burgay, Francois (57204171377); Baccolo, Giovanni (55929305200); Mygind, Amalie R. F. (58115254800); Petersen, Troels (55426296300); Spolaor, Andrea (54962645400); Vascon, Sebastiano (55613348400); Pelillo, Marcello (7003995597); Ferretti, Patrizia (57195934540); Dos Reis, Rafael S. (58114880200); Simões, Jefferson C. (7006555395); Ronen, Yuval (57189847693); Delmonte, Barbara (6602741207); Viccaro, Marco (23494189000); Steffensen, Jorgen Peder (7006468315); Dahl-Jensen, Dorthe (6603711720); Nisancioglu, Kerim H. (7006798407); Barbante, Carlo (7006727897)

56572851100; 34973861400; 54882427000; 36174683100; 43960965300; 57215021688; 43061412700; 57204171377; 55929305200; 58115254800; 55426296300; 54962645400; 55613348400; 7003995597; 57195934540; 58114880200; 7006555395; 57189847693; 6602741207; 23494189000; 7006468315; 6603711720; 7006798407; 7006727897

Detection of ice core particles via deep neural networks

10.5194/tc-17-539-2023

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85148726704&doi=10.5194%2ftc-17-539-2023&partnerID=40&md5=5f0e34de6fbf33ff9032ff37348e42f4

Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy; Institute of Polar Sciences, ISP-CNR, Via Torino 155, Venice, 30172, Italy; Physics of Ice, Climate and Earth, Niels Bohr Institute, University of Copenhagen, Copenhagen, 2200, Denmark; Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5020, Norway; Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5020, Norway; GeoSphere Austria, Neulinggasse 38, Vienna, 1030, Austria; Department of Biological Sciences, University of Bergen, Thormohlensgate 53A, Bergen, 5006, Norway; Laboratory of Environmental Chemistry (LUC), Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland; Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milan, 20126, Italy; Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, Copenhagen, 2100, Denmark; Centro Polar e Climático, Universidade Federal Do Rio Grande, Porto Alegre, 91501-970, Brazil; Climate Change Institute, University of Maine, Orono, 04469, ME, United States; Dipartimento di Scienze Biologiche Geologiche e Ambientali, Universita Degli Studi di Catania, Corso Italia 57, Catania, 95129, Italy; Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania, Osservatorio Etneo, Piazza Roma 2, Catania, 95125, Italy

Maffezzoli N., Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy, Institute of Polar Sciences, ISP-CNR, Via Torino 155, Venice, 30172, Italy; Cook E., Physics of Ice, Climate and Earth, Niels Bohr Institute, University of Copenhagen, Copenhagen, 2200, Denmark; Van Der Bilt W.G.M., Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5020, Norway, Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5020, Norway; Storen E.N., Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5020, Norway; Festi D., GeoSphere Austria, Neulinggasse 38, Vienna, 1030, Austria; Muthreich F., Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5020, Norway, Department of Biological Sciences, University of Bergen, Thormohlensgate 53A, Bergen, 5006, Norway; Seddon A.W.R., Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5020, Norway, Department of Biological Sciences, University of Bergen, Thormohlensgate 53A, Bergen, 5006, Norway; Burgay F., Laboratory of Environmental Chemistry (LUC), Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland; Baccolo G., Laboratory of Environmental Chemistry (LUC), Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland, Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milan, 20126, Italy; Mygind A.R.F., Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, Copenhagen, 2100, Denmark; Petersen T., Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, Copenhagen, 2100, Denmark; Spolaor A., Institute of Polar Sciences, ISP-CNR, Via Torino 155, Venice, 30172, Italy; Vascon S., Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy; Pelillo M., Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy; Ferretti P., Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy; Dos Reis R.S., Centro Polar e Climático, Universidade Federal Do Rio Grande, Porto Alegre, 91501-970, Brazil; Simões J.C., Centro Polar e Climático, Universidade Federal Do Rio Grande, Porto Alegre, 91501-970, Brazil, Climate Change Institute, University of Maine, Orono, 04469, ME, United States; Ronen Y., Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5020, Norway; Delmonte B., Department of Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, Milan, 20126, Italy; Viccaro M., Dipartimento di Scienze Biologiche Geologiche e Ambientali, Universita Degli Studi di Catania, Corso Italia 57, Catania, 95129, Italy, Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania, Osservatorio Etneo, Piazza Roma 2, Catania, 95125, Italy; Steffensen J.P., Physics of Ice, Climate and Earth, Niels Bohr Institute, University of Copenhagen, Copenhagen, 2200, Denmark; Dahl-Jensen D., Physics of Ice, Climate and Earth, Niels Bohr Institute, University of Copenhagen, Copenhagen, 2200, Denmark; Nisancioglu K.H., Department of Earth Science, University of Bergen, Allégaten 41, Bergen, 5020, Norway, Bjerknes Centre for Climate Research, Jahnebakken 5, Bergen, 5020, Norway; Barbante C., Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy, Institute of Polar Sciences, ISP-CNR, Via Torino 155, Venice, 30172, Italy

Insoluble particles in ice cores record signatures of past climate parameters like vegetation dynamics, volcanic activity, and aridity. For some of them, the analytical detection relies on intensive bench microscopy investigation and requires dedicated sample preparation steps. Both are laborious, require in-depth knowledge, and often restrict sampling strategies. To help overcome these limitations, we present a framework based on flow imaging microscopy coupled to a deep neural network for autonomous image classification of ice core particles. We train the network to classify seven commonly found classes, namely mineral dust, felsic and mafic (basaltic) volcanic ash grains (tephra), three species of pollen (Corylus avellana, Quercus robur, Quercus suber), and contamination particles that may be introduced onto the ice core surface during core handling operations. The trained network achieves 96.8ĝ€¯% classification accuracy at test time. We present the system's potential and its limitations with respect to the detection of mineral dust, pollen grains, and tephra shards, using both controlled materials and real ice core samples. The methodology requires little sample material, is non-destructive, fully reproducible, and does not require any sample preparation procedures. The presented framework can bolster research in the field by cutting down processing time, supporting human-operated microscopy, and further unlocking the paleoclimate potential of ice core records by providing the opportunity to identify an array of ice core particles. Suggestions for an improved system to be deployed within a continuous flow analysis workflow are also presented. © Copyright:

artificial neural network; ice core; paleobotany; paleoclimate; pollen

N. Maffezzoli; Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Venice, Via Torino 155, 30172, Italy; email: niccolo.maffezzoli@unive.it

Copernicus Publications

All Open Access; Gold Open Access

2-s2.0-85148726704

de Souza M.V.; da Silva L.G.R.; Silva-Pinto V.; Mendez-Quiros P.; de Miranda Chaves S.A.; Iñiguez A.M.

de Souza, Mônica Vieira (55069500400); da Silva, Lucélia Guedes Ribeiro (57199145797); Silva-Pinto, Verónica (37059769300); Mendez-Quiros, Pablo (57193205499); de Miranda Chaves, Sergio Augusto (7003574005); Iñiguez, Alena Mayo (7005329361)

55069500400; 57199145797; 37059769300; 57193205499; 7003574005; 7005329361

New paleoparasitological investigations from the pre-inca to hispanic contact period in northern Chile

10.1016/j.actatropica.2017.11.021

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037653724&doi=10.1016%2fj.actatropica.2017.11.021&partnerID=40&md5=e54344b0f41f1212bff16e7e0d0ef8d1

Laboratório de Paleoparasitologia, Escola Nacional de Saúde Pública Sergio Arouca/Fundação Oswaldo Cruz (DENSP/ENSP/FIOCRUZ), Rua Leopoldo Bulhões, 1480, Manguinhos, Rio de Janeiro, 21041-210, RJ, Brazil; LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC/FIOCRUZ), Av. Brasil 4365, Rio de Janeiro, 21040-900, RJ, Brazil; Área de Antropología, Museo Nacional de Historia Natural, Casilla 787, Santiago de Chile, Chile; Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany; Universidad Autónoma de Barcelona, Departamento de Prehistoria, Programa de Doctorado en Arqueología Prehistórica, Spain; Laboratório de Ecologia da Escola Nacional de Saúde Pública da FIOCRUZ, Rua Leopoldo Bulhões 1480, térreo-Manguinhos, Rio de Janeiro, 21041-210, RJ, Brazil

de Souza M.V., Laboratório de Paleoparasitologia, Escola Nacional de Saúde Pública Sergio Arouca/Fundação Oswaldo Cruz (DENSP/ENSP/FIOCRUZ), Rua Leopoldo Bulhões, 1480, Manguinhos, Rio de Janeiro, 21041-210, RJ, Brazil, LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC/FIOCRUZ), Av. Brasil 4365, Rio de Janeiro, 21040-900, RJ, Brazil; da Silva L.G.R., LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC/FIOCRUZ), Av. Brasil 4365, Rio de Janeiro, 21040-900, RJ, Brazil; Silva-Pinto V., Área de Antropología, Museo Nacional de Historia Natural, Casilla 787, Santiago de Chile, Chile, Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany; Mendez-Quiros P., Universidad Autónoma de Barcelona, Departamento de Prehistoria, Programa de Doctorado en Arqueología Prehistórica, Spain; de Miranda Chaves S.A., Laboratório de Ecologia da Escola Nacional de Saúde Pública da FIOCRUZ, Rua Leopoldo Bulhões 1480, térreo-Manguinhos, Rio de Janeiro, 21041-210, RJ, Brazil; Iñiguez A.M., LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC/FIOCRUZ), Av. Brasil 4365, Rio de Janeiro, 21040-900, RJ, Brazil

Paleoparasitological studies have demonstrated that changes in environment or culture are reflected in the patterns of parasitic infection diseases in populations worldwide. The advent of agriculture and animal domestication, with its accompanying reduction in human mobility and expanding population involves changes in or emergence of, parasites, the so-called first epidemiological transition. Cultural processes related to territory occupation contribute to both loss and acquisition of parasites. The archaeological site Lluta 57 in the Lluta Valley, Chile, provides a chronology of the transition from the pre-Inca or Late Intermediate Period (LIP), through the Late or Inca Period (LP), to the Hispanic Contact Period (HCP), providing the possibility of evaluating this epidemiological transition. The aim of this study was to conduct a paleoparasitological investigation of to gain insight into the dynamics of parasitism in Lluta people throughout the Inca expansion. Fourteen human coprolites from the three periods were rehydrated, submitted to spontaneous sedimentation, and examined by light microscopy for the presence of intestinal parasite eggs, pollen grains, and micro-remains. Eggs of four parasites: Enterobius vermicularis, Trichostrongylus sp., Trichuris sp., and Eimeria macusaniensis were recovered. Frequency, diversity, and number of parasite eggs per sample increased over the studied time period. Trichostrongylus sp. and E. macusaniensis were recorded in the region for the first time. Enterobius vermicularis eggs, absent in the LIP, were present as a hyper-infection in LP. The presence of E. macusaniensis is likely related to exploitation of llamas, which were used for food and transport and as sacrificial offerings. The paleobotanical analysis revealed ten families of pollen grains, as well as phytoliths and floral remains. In contrast to parasitological results, a diachronic pattern was not detected. Evolution of the settlements, with the advent of larger, more densely populated, villages, could have influenced the emergence and intensification of transmission of parasites in the region. The study showed that the Inca expansion influenced host-parasite-environment relationships in the Lluta Valley. © 2017 Elsevier B.V.

Coprolite; Helminth; Inca empire; Micro-remains; Paleobotany; Paleoparasitology

Animals; Chile; Demography; Feces; Fossils; Helminthiasis; History, Ancient; History, Medieval; Humans; Intestinal Diseases, Parasitic; Chile; Animalia; Eimeria; Enterobius vermicularis; Lama glama; Trichostrongylus; Trichuris; Vermes; archaeology; chronology; epidemiology; host-parasite interaction; paleobotany; parasite; parasite transmission; parasitism; parasitology; Article; botany; Chile; Eimeria; Eimeria macusaniensis; Enterobius vermicularis; fossil; historical period; host parasite interaction; microbial diversity; nonhuman; paleobotany; paleoparasitology; parasite egg count; parasite transmission; parasitism; parasitology; pollen; Pre Hispanic Period; Pre Inca Period; Trichostrongylus; Trichuris; animal; demography; feces; helminthiasis; history; human; intestine infection

A.M. Iñiguez; LABTRIP, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC/FIOCRUZ), Rio de Janeiro, Av. Brasil 4365, 21040-900, Brazil; email: alenainiguez@gmail.com

All Open Access; Hybrid Gold Open Access

2-s2.0-85037653724

Bachelet C.; Scheel-Ybert R.

Bachelet, Caroline (55872824900); Scheel-Ybert, Rita (6602887175)

55872824900; 6602887175

Landscape and firewood selection in the Santa Elina rock shelter (Mato Grosso, Brazil) during the Holocene

Quaternary International

10.1016/j.quaint.2015.12.019

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84952684626&doi=10.1016%2fj.quaint.2015.12.019&partnerID=40&md5=8d4e4e92c9afe0557b0f3432bfae20bb

Posdoc, Museu Nacional, Universidade Federal Rio de Janeiro, Programa de Pós-Graduação em Arqueologia, Departamento de Antropologia, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil; Museu Nacional, Universidade Federal Rio de Janeiro, Programa de Pós-Graduação em Arqueologia, Departamento de Antropologia, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil

Bachelet C., Posdoc, Museu Nacional, Universidade Federal Rio de Janeiro, Programa de Pós-Graduação em Arqueologia, Departamento de Antropologia, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil; Scheel-Ybert R., Museu Nacional, Universidade Federal Rio de Janeiro, Programa de Pós-Graduação em Arqueologia, Departamento de Antropologia, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil

Santa Elina rock shelter, in Central Brazil, is renowned for its astounding rock art, rare preservation of plant remains, and long-lasting occupation. Different groups of hunter–gatherers dwelt in this place since the Late Pleistocene until Late Holocene, leaving many vestiges of their passage. Charcoal samples from its upper archaeological assemblage, at Sector West of the site (dated c. 2000–3500 BP), and from its intermediate archaeological assemblage, at Sector East (dated c. 9000–10000 BP), were analyzed according to standard anthracological methods. Samples of dispersed charcoal from four archaeological levels were analyzed in the former, and from eight combustion structures in the latter. Despite the heterogeneity in the assemblages, interesting palaeoenvironmental and palaeoethnobotanical results were produced. During the late Holocene the shelter was surrounded by a semideciduous forest similar to the present one, under similar climate. Similar conditions might have occurred in the early Holocene, or the vegetation could have been a more open cerrado physiognomy, thus under a drier climate. Firewood gathering strategies in both periods involved the opportunistic collection of dead wood. Evidence of firewood selection is presented for bamboo in the late Holocene and for Anadenanthera in the early and in late Holocene. © 2015 Elsevier Ltd and INQUA

Anthracology; Archaeobotany; Brazil; Landscape; Palaeoecology; Prehistory

Brazil; Mato Grosso; Anadenanthera; charcoal; ethnobotany; Holocene; landscape; paleobotany; paleoecology; paleoenvironment; prehistoric; shelter; wood

C. Bachelet; Posdoc, Museu Nacional, Universidade Federal Rio de Janeiro, Programa de Pós-Graduação em Arqueologia, Departamento de Antropologia, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, Rio de Janeiro, São Cristóvão, 20940-040, Brazil; email: bachelet@mnhn.fr

All Open Access; Bronze Open Access

2-s2.0-84952684626

Herendeen P.S.; Cardoso D.B.O.S.; Herrera F.; Wing S.L.

Herendeen, Patrick S. (6701710897); Cardoso, Domingos B. O. S. (24376377600); Herrera, Fabiany (24480882000); Wing, Scott L. (7103353518)

6701710897; 24376377600; 24480882000; 7103353518

Fossil papilionoids of the Bowdichia clade (Leguminosae) from the Paleogene of North America

American Journal of Botany

10.1002/ajb2.1808

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122866934&doi=10.1002%2fajb2.1808&partnerID=40&md5=b152933cead1923f7dd7c74d992296e9

Negaunee Institute for Plant Conservation Science and Action, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, 60022, IL, United States; Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s.n., Ondina, Bahia, Salvador, 40170-115, Brazil; Earth Sciences, Negaunee Integrative Research Center, Field Museum of Natural History, 1400 S Lake Shore Dr, Chicago, 60605, IL, United States; Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, 20560, DC, United States

Herendeen P.S., Negaunee Institute for Plant Conservation Science and Action, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, 60022, IL, United States; Cardoso D.B.O.S., Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s.n., Ondina, Bahia, Salvador, 40170-115, Brazil; Herrera F., Earth Sciences, Negaunee Integrative Research Center, Field Museum of Natural History, 1400 S Lake Shore Dr, Chicago, 60605, IL, United States; Wing S.L., Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, 20560, DC, United States

Premise: Understanding the evolutionary history of flowering plants has been enriched by the integration of molecular phylogenies and evidence from the fossil record. Fossil fruits and leaves from the late Paleocene and Eocene of Wyoming and Eocene of Kentucky and Tennessee are described as extinct genera in the tropical American Bowdichia clade of the legume subfamily Papilionoideae. Recent phylogenetic study and taxonomic revision of the Bowdichia clade have facilitated understanding of relationships of the fossil taxa and their evolutionary implications and paleoenvironmental significance. Methods: The fossils were studied using standard methods of specimen preparation and light microscopy and compared to fruits and leaves from extant legume taxa using herbarium collections. Phylogenetic relationships of the fossil taxa were assessed using morphology and DNA sequence data. Results: Two new fossil genera are described and their phylogenetic relationships are established. Paleobowdichia lamarensis is placed as sister to the extant genus Bowdichia and Tobya claibornensis is placed with the extant genera Guianodendron and Staminodianthus. Conclusions: These fossils demonstrate that the tropical American Bowdichia clade was present in North America during a period when tropical or subtropical conditions prevailed in the northern Rocky Mountains during the late Paleocene and the Mississippi Embayment during the middle Eocene. These fossils also document that the Bowdichia clade had diversified by the late Paleocene when the fossil record of the family is relatively sparse. This result suggests that future work on early fossil legumes should focus on tropical and subtropical climatic zones, wherever they may occur latitudinally. © 2022 The Authors. American Journal of Botany published by Wiley Periodicals LLC on behalf of Botanical Society of America.

Biological Evolution; Fabaceae; Fossils; North America; Phylogeny; Kentucky; Mississippi Embayment; Rocky Mountains; Tennessee; United States; Wyoming; angiosperm; climate conditions; DNA; fossil record; fruit; genetic analysis; herbarium; legume; molecular analysis; paleobotany; paleoenvironment; phylogenetics; evolution; Fabaceae; fossil; genetics; North America; phylogeny

P.S. Herendeen; Negaunee Institute for Plant Conservation Science and Action, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, 60022, United States; email: pherendeen@chicagobotanic.org

John Wiley and Sons Inc

All Open Access; Green Open Access; Hybrid Gold Open Access

2-s2.0-85122866934

Valdez Buso V.; di Pasquo M.; Milana J.P.; Kneller B.; Fallgatter C.; Junior F.C.; Gomes Paim P.S.

Valdez Buso, Victoria (57192709314); di Pasquo, Mercedes (6506967382); Milana, Juan Pablo (6603960737); Kneller, Benjamin (6701526592); Fallgatter, Claus (57191573891); Junior, Farid Chemale (49261116300); Gomes Paim, Paulo Sérgio (6507632697)

57192709314; 6506967382; 6603960737; 6701526592; 57191573891; 49261116300; 6507632697

Integrated U-Pb zircon and palynological/palaeofloristic age determinations of a Bashkirian palaeofjord fill, Quebrada Grande (Western Argentina)

Journal of South American Earth Sciences

10.1016/j.jsames.2016.12.009

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007565868&doi=10.1016%2fj.jsames.2016.12.009&partnerID=40&md5=9b530d03ef3f6aa6eea8a562efb3f522

UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia, Av. Unisinos, 950, Cristo Rei, São Leopoldo, 93022-000, Rio Grande do Sul, Brazil; CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Palinoestratigrafía y Paleobotánica, CICyTTP-CONICET, Dr. Materi y España S/N, Diamante, E3105BWA, Entre Ríos, Argentina; CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de San Juan, Argentina. Av. Ignacio de la Roza 590(O), Complejo Universitario “Islas Malvinas”, Rivadavia, J4502DCS, San Juan, Argentina; Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom

Valdez Buso V., UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia, Av. Unisinos, 950, Cristo Rei, São Leopoldo, 93022-000, Rio Grande do Sul, Brazil, Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom; di Pasquo M., CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Laboratorio de Palinoestratigrafía y Paleobotánica, CICyTTP-CONICET, Dr. Materi y España S/N, Diamante, E3105BWA, Entre Ríos, Argentina; Milana J.P., CONICET - Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de San Juan, Argentina. Av. Ignacio de la Roza 590(O), Complejo Universitario “Islas Malvinas”, Rivadavia, J4502DCS, San Juan, Argentina; Kneller B., Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom; Fallgatter C., UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia, Av. Unisinos, 950, Cristo Rei, São Leopoldo, 93022-000, Rio Grande do Sul, Brazil; Junior F.C., UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia, Av. Unisinos, 950, Cristo Rei, São Leopoldo, 93022-000, Rio Grande do Sul, Brazil; Gomes Paim P.S., UNISINOS - Universidade do Vale do Rio Dos Sinos, Programa de Pós-Graduação em Geologia, Av. Unisinos, 950, Cristo Rei, São Leopoldo, 93022-000, Rio Grande do Sul, Brazil

This work presents a new age framework for the main Bashkirian glacio-eustatic transgression in Argentina, including the first absolute age for the Jejenes Formation, San Juan Province, based on radiometric dating of a crystal-rich tuff, supported by palynological and palaeofloristic studies, and presented within a revised palaeogeographic setting. The Jejenes Formation represents the glacial to postglacial fill of the Quebrada Grande palaeofjord carved in the Eastern Precordillera. The succession has been subdivided into five stages, the youngest of which suggests a previously unrecognised glacial event for this locality. Six productive levels for palynology were found within proglacial strata, and in the base and top of the succeeding interglacial stage. Palynoassemblages are characterized by poorly preserved trilete spores and monosaccate pollen grains along with a large amount of terrestrial phytoclasts. Main species indicating the Raistrickia densa-Convolutispora muriornata SubZone (DMa SZ) are Vallatisporites ciliaris, Cristatisporites rollerii, C. stellatus, C. chacoparanensis, C. inconstans and monosaccates such as Circumplicatipollis plicatus. This DMa SZ is estimated as Serpukhovian/Bashkirian and characterizes the glacial-related Guandacol Formation and equivalents units of the western Paganzo Basin. A tuffaceous level in the proglacial unit, bearing platyspermic seeds, plant remains and palynomorphs, yielded first-cycle volcanic zircons that were analysed by SHRIMP. An absolute age of 321.3 ± 5.3 Ma confirms a Bashkirian age for the main postglacial transgression in the Paganzo Basin, and offers a novel calibration for the palynoassemblages of DMa SZ that occurs elsewhere in Western Argentina. © 2016 Elsevier Ltd

Isotopic age; Jejenes formation; Late palaeozoic ice age; Paganzo basin; Palynology; Platyspermic seeds

Argentina; Paganzo Basin; Vallatisporites; Bashkirian; floristics; glacioeustacy; integrated approach; paleobotany; paleoclimate; paleogeography; palynology; SHRIMP dating; transgression; uranium-lead dating

V. Valdez Buso; Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen, AB24 3UE, United Kingdom; email: victoria.valdezbuso@abdn.ac.uk

J. South Am. Earth Sci.

All Open Access; Green Open Access

2-s2.0-85007565868

Mezzonato-Pires A.C.; Teixeira G.H.G.D.S.F.; Gonçalves-Esteves V.; Barbieri Ferreira Mendonça C.

Mezzonato-Pires, Ana Carolina (55815429500); Teixeira, Gabriel Henrique Gomes de Souza Freitas (57210589541); Gonçalves-Esteves, Vania (23011824700); Barbieri Ferreira Mendonça, Cláudia (55407444800)

55815429500; 57210589541; 23011824700; 55407444800

Pollen diversity of Adenia, Crossostemma and Schlechterina (Passifloraceae sensu stricto): types of apertures and implications for evolutionary studies

10.1080/01916122.2019.1646339

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070958447&doi=10.1080%2f01916122.2019.1646339&partnerID=40&md5=0030848ac1b2f47cd6e09ee2ebbdf43d

Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil

Mezzonato-Pires A.C., Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil; Teixeira G.H.G.D.S.F., Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil; Gonçalves-Esteves V., Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil; Barbieri Ferreira Mendonça C., Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Brazil

The genera Adenia Forssk., Crossostemma Planch. ex Benth. and Schlechterina Harms are members of the tribe Passifloreae DC., one of two tribes belonging to Passifloraceae sensu stricto. The genus Adenia is considered the sister group of all Passifloraceae sensu stricto, or as the sister to the other genera of the tribe Passifloreae. Crossostemma and Schlechterina are sister taxa. The objective of the present study was to characterise the pollen morphology of these three genera and to determine whether Adenia is palynologically distinct from the monotypic genera Crossostemma and Schlechterina. Pollen grains of eight species (six of Adenia, one of Crossostemma and one of Schlechterina) were acetolysed, measured, described and illustrated using light and scanning electron microscopy. The pollen grains of the analysed species are medium-sized isopolar monads that are subprolate, oblate-spheroidal or prolate-spheroidal with a subcircular to quadrangular amb and a small polar area; the pollen of Crossostemma and Schlechterina are 3-colporate, while that of Adenia is 4-colporate or rarely 3–4-colporate (in one studied species), and the sexine is reticulate, heterobrochate or homobrochate (Crossostemma), with simplicolumellate walls. The pollen grains of Adenia differ from those of Crossostema and Schlechterina mainly in the number of apertures. Multivariate analysis of the genera studied here, performed with published pollen data for Paropsia Noronha ex Thouars and Barteria Hook. f., revealed the formation of two large groups, one comprising Barteria and another comprising the other genera. Pollen morphology reveals that Paropsia has greater affinity with the genera of the tribe Passifloreae. The results lead to the hypothesis that genera belonging to the tribe Passifloreae possess pollen with fewer apertures than the pollen of taxa of the tribe Paropsieae. © 2019, © 2019 AASP–The Palynological Society.

diversity; morphology; multivariate analysis; Passifloraceae; pollen

Adenia; Paropsia; Passifloraceae; fossil record; morphology; nomenclature; paleobotany; palynology; polar region; pollen; taxonomy; type specimen

C. Barbieri Ferreira Mendonça; Departamento de Botânica, Laboratório de Palinologia, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, 20940-040, Brazil; email: cb.mendonca@gmail.com

Taylor and Francis Inc.

2-s2.0-85070958447

Scheel-Ybert, Rita (6602887175)

Charcoal collections of the world

10.1163/22941932-20160148

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988614822&doi=10.1163%2f22941932-20160148&partnerID=40&md5=7037654680e633eb6d30fc98bfc8016a

Museu Nacional, Universidade Federal do Rio de Janeiro, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, Sao Cristovao, Rio de Janeiro, RJ, 20940-040, Brazil

Scheel-Ybert R., Museu Nacional, Universidade Federal do Rio de Janeiro, Laboratório de Arqueobotânica e Paisagem, Quinta da Boa Vista, Sao Cristovao, Rio de Janeiro, RJ, 20940-040, Brazil

Charcoal reference collections are very important for identifying unknown charcoal specimens in different contexts (palaeoecological, archaeological, environmental and others) and form an integral part of anthracological studies, which can provide crucial information for researchers of different expertise, as wood anatomy, archaeology, palaeobotany, forestry, forensics, etc. A first inventory on charcoal collections maintained by scientific institutions or private individuals around the world revealed 53 charcoal collections in five continents. There is a high concentration of collections and specimens in Europe, reflecting a better established and longer tradition of charcoal identification in temperate and mediterranean regions. However, research seems to be firmly advancing in other parts of the world, especially in the tropics, where important collections are being established. The great increase observed in the number of existing charcoal collections and their geographical spread in the last years attest to their importance, as well as to the vigour of anthracology in its various approaches. The wood anatomical community is called upon to help fill gaps in this first inventory of charcoal collections. © International Association of Wood Anatomists, 2016.

Anthracology; Charcoal analysis; Collections; Wood anatomy; Wood identification

R. Scheel-Ybert; Museu Nacional, Universidade Federal do Rio de Janeiro, Laboratório de Arqueobotânica e Paisagem, Sao Cristovao, Rio de Janeiro, RJ, Quinta da Boa Vista, 20940-040, Brazil; email: scheelybert@mn.ufrj.br

Brill Academic Publishers

2-s2.0-84988614822

da Costa F.G.C.M.; Pellegrini M.O.O.; Bove C.P.

da Costa, Filipe G.C.M. (55179313100); Pellegrini, Marco O.O. (57200539420); Bove, Claudia P. (56375630800)

55179313100; 57200539420; 56375630800

Diversity of silica bodies in Mourera Aublet (Podostemaceae) and its phylogenetic, paleobotanical, and taxonomic applications

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2021.104509

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114838059&doi=10.1016%2fj.revpalbo.2021.104509&partnerID=40&md5=a468ae56afe6da3e1dfdb075d60c46dd

Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 20940-040, RJ, Brazil; Universidade Federal Rural da Amazônia / Museu Paraense Emilio Goeldi, Av. Perimetral, 1901, Terra Firme, Belém, 66077-830, PA, Brazil; Scientifik Consultoria, Petrópolis, 25651-090, RJ, Brazil

da Costa F.G.C.M., Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 20940-040, RJ, Brazil; Pellegrini M.O.O., Universidade Federal Rural da Amazônia / Museu Paraense Emilio Goeldi, Av. Perimetral, 1901, Terra Firme, Belém, 66077-830, PA, Brazil, Scientifik Consultoria, Petrópolis, 25651-090, RJ, Brazil; Bove C.P., Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 20940-040, RJ, Brazil

We tested the phylogenetic, paleobotanical, and taxonomic (i.e., presence, location, and morphology) relevance of silica bodies in leaves of Mourera (M. aspera, M. elegans, M. fluviatilis, M. glazioviana, M. schwackeana, and M. weddelliana). Leaf samples were macerated and examined using light and scanning electron microscopy. The location of silica bodies was determined through cross- and longitudinal–anatomical sections. Silica bodies were found in all analyzed species of Mourera, occurring in the subepidermal cells and/or in the perivascular cells. These structures presented different shapes in each analyzed species, being noteworthy the presence of polygonal and trapeziform shapes in M. fluviatilis, bifid shape in M. aspera and M. weddelliana, and fusiform shape in M. elegans and M. schwackeana. Three ornamentation types were recognized: verrucate, verrucate–granulate, and verrucate–nodulate. The width/length ratio ranged from 34 (M. elegans) to 60.8% (M. fluviatilis). The location and morphology of silica bodies allowed the identification at the species level. Our results emphasize the relevance of these character states on a forthcoming phylogenetic analysis and taxonomic revision of Mourera, as well as in its recognition in paleo-sedimentary environments. © 2021 Elsevier B.V.

Malpighiales; Phytoliths; Podostemoideae; Rheophytes; Silicon

Malpighiales; Mourera; Mourera fluviatilis; Podostemaceae; anatomy; cell; dicotyledon; leaf; morphology; ornamentation; paleobotany; phylogenetics; silica; taxonomy

F.G.C.M. da Costa; Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 20940-040, Brazil; email: filipe_gomes88@ufrj.br

Rev. Palaeobot. Palynol.

2-s2.0-85114838059

Morgado L.N.; Gonçalves-Esteves V.; Resendes R.; Ventura M.A.M.

Morgado, Leila Nunes (54952394400); Gonçalves-Esteves, Vania (23011824700); Resendes, Roberto (55872080300); Ventura, Maria A. Mateus (56013141900)

54952394400; 23011824700; 55872080300; 56013141900

A pollen inventory of endemic species from the Azores archipelago, Portugal

10.1080/01916122.2017.1346526

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85025144281&doi=10.1080%2f01916122.2017.1346526&partnerID=40&md5=3f2847f9e14274951b01df55a628d1b7

CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo Açores, Departamento de Biologia, Universidade dos Açores, Rua da Mãe de Deus, Apartado 1422, Ponta Delgada, Açores, 9501-801, Portugal; Universidade Federal do Rio de Janeiro, Departamento de Botânica, Museu Nacional, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil

Morgado L.N., CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo Açores, Departamento de Biologia, Universidade dos Açores, Rua da Mãe de Deus, Apartado 1422, Ponta Delgada, Açores, 9501-801, Portugal, Universidade Federal do Rio de Janeiro, Departamento de Botânica, Museu Nacional, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil; Gonçalves-Esteves V., Universidade Federal do Rio de Janeiro, Departamento de Botânica, Museu Nacional, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, 20940-040, RJ, Brazil; Resendes R., CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo Açores, Departamento de Biologia, Universidade dos Açores, Rua da Mãe de Deus, Apartado 1422, Ponta Delgada, Açores, 9501-801, Portugal; Ventura M.A.M., CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo Açores, Departamento de Biologia, Universidade dos Açores, Rua da Mãe de Deus, Apartado 1422, Ponta Delgada, Açores, 9501-801, Portugal

The object of this study was to morphologically characterise the pollen grains from species endemic to the Azores, Portugal, in order to devise a pollen key to identify this plant group. The pollen grains from each studied species were subjected to standard acetolysis, and were mounted on at least three permanent slides for each species, in order to observe and measure the pollen grains. Pollen surface details were described from images obtained through a scanning electron microscope. A total of 43 endemic species, distributed in 22 families and 37 genera, were analysed. It was observed that most of the studied families showed specific traits of polarity, sexine ornamentation, absence or presence of aperture and shape, and can be considered eurypalynous. Families Apiaceae, Ericaceae and Poaceae showed stenopalynous traits among species. The results obtained in this work made it possible to devise a pollen key to identify of the studied species. © 2017 AASP–The Palynological Society.

Azores Islands; endemic; eurypalynous; palynotaxonomy; stenopalynous; vegetation

Azores; Portugal; Apiaceae; Ericaceae; Poaceae; endemic species; herb; paleobotany; paleoenvironment; palynology; pollen; population distribution; taxonomy; vegetation dynamics

L.N. Morgado; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Pólo Açores, Departamento de Biologia, Universidade dos Açores, Ponta Delgada, Açores, Rua da Mãe de Deus, Apartado 1422, 9501-801, Portugal; email: leila.morgado1@gmail.com

Taylor and Francis Inc.

2-s2.0-85025144281

Soares E.L.; Landi L.A.D.C.; Souza C.N.D.; Gasparino E.C.

Soares, Eduardo Lopes (57214182202); Landi, Lorrayne Albernaz Domingues Camilo (57218681351); Souza, Cintia Neves De (56574718800); Gasparino, Eduardo Custódio (34768030000)

57214182202; 57218681351; 56574718800; 34768030000

Polyads types of the mimosoid clade (Caesalpinioideae, Fabaceae): size and pollen numbers variations

10.1080/00173134.2021.1990397

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121498048&doi=10.1080%2f00173134.2021.1990397&partnerID=40&md5=26c469750c51491e7551dd67d63dd1b9

Programa de Pós-graduação em Biologia Comparada, Universidade de São Paulo, Ribeirão Preto, Brazil; Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, Brazil; Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, Universidade Estadual Paulista, Jaboticabal, Brazil

Soares E.L., Programa de Pós-graduação em Biologia Comparada, Universidade de São Paulo, Ribeirão Preto, Brazil, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, Brazil; Landi L.A.D.C., Programa de Pós-graduação em Biologia Comparada, Universidade de São Paulo, Ribeirão Preto, Brazil, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, Brazil; Souza C.N.D., Programa de Pós-graduação em Biologia Comparada, Universidade de São Paulo, Ribeirão Preto, Brazil, Faculdade de Filosofia, Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, Brazil; Gasparino E.C., Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, Universidade Estadual Paulista, Jaboticabal, Brazil

The pollen morphology of 17 species and three varieties of the native mimosoid clade of forest fragments of the Cerrado (Brazilian savanna) was studied in order to expand the knowledge on the morphology of genera and species of this group, in particular on the morphology of polyads, as well as add information to pollen studies for species of Caesalpinioideae occurring in the area. The pollen grains were acetolysed, measured, described qualitatively and illustrated under light microscopy and scanning electron microscopy (not acetolysed pollen grains). Pollen metric data were examined by descriptive and multivariate analysis. The studied species showed differences on the pollen units (monads or polyads) and variations in number and distribution of pollen grains in the polyads. Three pollen types were observed: type I, pollen grains in monads (Plathymenia reticulata); type II, polyads with one tapered end (drop shape–Calliandra parviflora); type III, polyads with uniform ends with asymmetrically distributed pollen grains (Stryphnodendron species); or symmetrically (with 16 or 20 pollen grains in Acacia plumosa, Albizia niopoides, Anadenanthera species, Inga marginata, Inga vera and Senegalia species and more than 20 pollen grains in Enterolobium contortisiliquum, Inga edulis and Inga sessilis). The qualitative differences and the measuremets of the diameters of the polyads, made it possible to distinguish the taxa and to confirm the eurypalynous character of the mimosoid clade (Caesalpinioideae, Fabaceae). © 2021 Collegium Palynologicum Scandinavicum.

Brazil; eurypalynous; hierarchical cluster analysis (HCA); Leguminosae; palynology; principal component analysis (PCA)

angiosperm; knowledge; paleobiology; paleobotany; pollen

E.L. Soares; Universidade Estadual Paulista, UNESP, Jaboticabal, via de acesso Prof. Paulo Castellane, s/n, SP, CEP 14884-900, Brazil; email: eduardo.gasparino@unesp.br

Taylor and Francis A.S.

2-s2.0-85121498048

Esperança Júnior M.G.F.; Conceição D.M.D.; Iannuzzi R.

Esperança Júnior, Mário G.F. (57216754453); Conceição, Domingas Maria da (57189657696); Iannuzzi, Roberto (6603970107)

57216754453; 57189657696; 6603970107

Influence of the abiotic environment on Permian woods from northwestern Gondwana

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2023.104947

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166025196&doi=10.1016%2fj.revpalbo.2023.104947&partnerID=40&md5=72b84e99428a9ae53591fb903d9dfff7

Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, 60020-181, Brazil; Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91509-900, Brazil; Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Santana do Cariri, 63190-000, Brazil

Esperança Júnior M.G.F., Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, 60020-181, Brazil, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91509-900, Brazil; Conceição D.M.D., Museu de Paleontologia Plácido Cidade Nuvens, Universidade Regional do Cariri, Santana do Cariri, 63190-000, Brazil; Iannuzzi R., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, 91509-900, Brazil

Fluctuations in cell densities are common in the secondary xylem of gymnosperms from the lower Permian of Maranhão, northeastern Brazil, but they lack any distinct annual growth ring. Although the region was under a subtropical arid climate, sedimentary sequences of the Pedra de Fogo Formation indicate that plants inhabited the shores of large lakes, ensuring sufficient moisture for continuous growth of diverse flora. Therefore, the presence of acyclical tree rings would be due to oscillations in the base level of adjacent lakes, occasioned by short periods of drought or flood. Even so, cell-to-cell variation of tracheid diameters was quantified through mean sensitivity, showing that environmental conditions are similar in the two paleobotanical sites analyzed. However, gymnosperms whose piths have canals, ducts, septa or lacunae exhibit a higher mean sensitivity, showing that such plants inhabited areas of greater water stress or have increased sensitivity to environmental disturbances. The effect of defoliation and biotic interactions is also presumed to have affected the cambial activity. Localized and concentric shear bands are features identified in several samples, indicating that the pressure of sediments on the woods resulted in non-axial plastic deformation during the burial. © 2023

Dendroecology; Paleoclimatology; Parnaíba Basin; Permian; Petrified woods; Wood taphonomy

Brazil; abiotic factor; defoliation; drought; environmental conditions; Gondwana; gymnosperm; paleoclimate; Permian; plastic deformation; taphonomy; water stress

M.G.F. Esperança Júnior; Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, 60020-181, Brazil; email: mario.esperancajr@gmail.com

Rev. Palaeobot. Palynol.

2-s2.0-85166025196

García Muro V.J.; Rubinstein C.V.; Pereira E.; Bergamaschi S.; Mendlowicz Mauller P.; Steemans P.

García Muro, Victoria J. (36968474300); Rubinstein, Claudia V. (7005631795); Pereira, Egberto (7202834278); Bergamaschi, Sérgio (7006782243); Mendlowicz Mauller, Paula (12797625500); Steemans, Philippe (6701508589)

36968474300; 7005631795; 7202834278; 7006782243; 12797625500; 6701508589

Early Devonian miospores and organic geochemistry from the Alto Garças Sub-basin (Paraná Basin), Brazil: Biostratigraphic, paleogeographical and paleoenvironmental implications

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2019.104150

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076478956&doi=10.1016%2fj.revpalbo.2019.104150&partnerID=40&md5=b7956624c3e84f93d2bde5e0a2f83d98

Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT CONICET Mendoza, A. Ruiz Leal s/n, Parque General San Martín, Mendoza, M5502IRA, Argentina; Departamento de Estratigrafia e Paleontologia, FGEL, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, Bloco A, Rio de Janeiro, 20559-900, RJ, Brazil; Departamento de Geología, Universidade Federal do Rio de Janeiro (UFRJ), Av. Pedro Calmon. no 550 - Prédio da Reitoria, 2° andar - Cidade Universitária, Rio de Janeiro, CEP 21941-901, RJ, Brazil; EDDY Lab/Palynology, 14 Allée du 6 Août, Bât. B-18, University of Liège, Liège 1, B-4000, Belgium

García Muro V.J., Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT CONICET Mendoza, A. Ruiz Leal s/n, Parque General San Martín, Mendoza, M5502IRA, Argentina; Rubinstein C.V., Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT CONICET Mendoza, A. Ruiz Leal s/n, Parque General San Martín, Mendoza, M5502IRA, Argentina; Pereira E., Departamento de Estratigrafia e Paleontologia, FGEL, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, Bloco A, Rio de Janeiro, 20559-900, RJ, Brazil; Bergamaschi S., Departamento de Estratigrafia e Paleontologia, FGEL, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier 524, Bloco A, Rio de Janeiro, 20559-900, RJ, Brazil; Mendlowicz Mauller P., Departamento de Geología, Universidade Federal do Rio de Janeiro (UFRJ), Av. Pedro Calmon. no 550 - Prédio da Reitoria, 2° andar - Cidade Universitária, Rio de Janeiro, CEP 21941-901, RJ, Brazil; Steemans P., EDDY Lab/Palynology, 14 Allée du 6 Août, Bât. B-18, University of Liège, Liège 1, B-4000, Belgium

The present study concerns the palynology (mainly miospores), and geochemistry of the Jaciara section, situated 5 km from the town of Jaciara, Mato Grosso, in the Paraná Basin of Brazil. The age of this outcrop is considered to be Early Devonian. A study of the whole assemblage has highlighted a diversified association of miospores. Their distribution throughout the samples is somewhat erratic, which sometimes complicates the determination of the biostratigraphic attribution. However the following markers have been identified: Apiculiretusispora brandtii, Brochotriletes bellatulus, Cymbohilates baqaensis, Cymbosporites asymmetricus, Cymbosporites wellmanii, Devonomonoletes sp. 1 in Breuer and Steemans (2013), Dibolispotites sp. 2 in Breuer and Steemans (2013), Dictyotriletes subgranifer, Distaverrucosisporites steemansii, Latosporites ovalis, Scylaspora costulosa, Verrucosisporites nafudensis, Verrucosisporites onustus, Verruciosisporites stictus, Zonotriletes brevivelatus, and Zonotriletes simplicissimus. The finding of these miospores allowed recognition of the following biozones established in Saudi Arabia: the papillensis-baqaenisis Biozone, Pragian in age; the ovalis-biornatus Biozone (ovalis, milleri, asymmetricus subzones), late Pragian to early Emsian in age; and possibly the lindlarensis-sextantii Biozone, middle Emsian in age. The presence of many taxa in common with other Gondwanan basins, particularly those from Saudi Arabia, North Africa and South America, corroborates the paleogeographical relationship between different regions of Gondwana, even between those located in very different paleolatitudes. New geochemical analyses were also performed and add more information toward the understanding of the local paleoenvironmental evolution. © 2019 Elsevier B.V.

Biostratigraphy; Brazil; Early Devonian; Geochemistry; Miospores; Paleobiogeography

Brazil; Jaciara; Lima [Peru]; Mato Grosso; North Africa; Paran; Peru; Saudi Arabia; Cymbohilates; Pragia; Scylaspora; Verrucosisporites; biostratigraphy; Emsian; Gondwana; identification method; miospore; organic geochemistry; paleobiogeography; paleobotany; palynology; Pragian

V.J. García Muro; Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CCT CONICET Mendoza, Mendoza, A. Ruiz Leal s/n, Parque General San Martín, M5502IRA, Argentina; email: vgarcia@mendoza-conicet.gov.ar

Rev. Palaeobot. Palynol.

All Open Access; Green Open Access

2-s2.0-85076478956

Tybusch G.P.; Iannuzzi R.; Bernardes-De-Oliveira M.E.C.; Lopes R.D.C.

Tybusch, Graciela Pereira (35749318200); Iannuzzi, Roberto (6603970107); Bernardes-De-Oliveira, Mary Elizabeth Cerruti (16634415400); Lopes, Ricardo Da Cunha (54921830700)

35749318200; 6603970107; 16634415400; 54921830700

Revaluation of the Glossopterids from the Lower Permian of Cambaí Grande Outcrop, Paraná Basin, RS

Geologia USP - Serie Cientifica

10.11606/issn.2316-9095.v16i4p41-51

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006410485&doi=10.11606%2fissn.2316-9095.v16i4p41-51&partnerID=40&md5=9670ca983eeaf490552bf9c498eea943

Universidade Federal do Rio Grande do Sul - UFRGS, Instituto de Geociências, Departamento de Paleontologia e Estratigrafia, Avenida Bento Gonçalves, 9500, Porto Alegre, CEP 91509-900, RS, Brazil; Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduacandcedil;ão em Geoquímica e Geotectônica, São Paulo, SP, Brazil; Universidade do Vale dos Sinos - UNISINOS, São Leopoldo, RS, Brazil

Tybusch G.P., Universidade Federal do Rio Grande do Sul - UFRGS, Instituto de Geociências, Departamento de Paleontologia e Estratigrafia, Avenida Bento Gonçalves, 9500, Porto Alegre, CEP 91509-900, RS, Brazil; Iannuzzi R., Universidade Federal do Rio Grande do Sul - UFRGS, Instituto de Geociências, Departamento de Paleontologia e Estratigrafia, Avenida Bento Gonçalves, 9500, Porto Alegre, CEP 91509-900, RS, Brazil; Bernardes-De-Oliveira M.E.C., Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduacandcedil;ão em Geoquímica e Geotectônica, São Paulo, SP, Brazil; Lopes R.D.C., Universidade do Vale dos Sinos - UNISINOS, São Leopoldo, RS, Brazil

The Cambaí Grande Outcrop, located in the municipality of São Gabriel of the State of Rio Grande do Sul, southernmost Brazil, is characterized by the occurrence of an exclusive fossil assemblage composed of marine invertebrate shells associated with some plant remains of elements from the "Glossopteris Flora". The main goal of this work is to reevaluate the "Cambaí Grande Flora" as well as section reanalysis. Therefore, the authors reviewed the existing paleobotanical material deposited at Universidade Federal do Rio Grande do Sul (UFRGS) and Universidade do Vale do Rio dos Sinos (UNISINOS) and redescribed the outcrop section. The outcrop sequence is 60 m thick and is divided into two well defined sections (both upper and lower). The studied plants were found in the basal part of the upper section. Besides the paleobotanical contents like Gangamopteris, Samaropsis, Cordaicarpus, Cordaites, unidentified remains of algal filaments and a cone of gymnosperm previously recorded by several authors and not properly understood thus far have been analyzed. This study confirmed for the first time the presence of Glossopteris-type leaves and the Indian species Gangamopteris cyclopteroides Feistmantel in the Cambaí Grande flora which increases the possibility of a correlation of this plant assemblage with that of the Rio Bonito Formation, Brazil, and those of the younger horizons of India. © 2016, Universidade de Sao Paulo. All rights reserved.

Cambaí Grande; Gangamopteris; Glossopteris; Lower Permian; Rio Bonito formation; State of Rio Grande do Sul

Brazil; Parana Basin; Rio Grande do Sul; algae; Cordaites; Gangamopteris; Glossopteris; Gymnospermae; Invertebrata; Katsuwonus pelamis; Samaropsis; biostratigraphy; fern; fossil assemblage; paleobotany; Permian

Universidade de Sao Paulo

Geol. USP Ser. Cient.

All Open Access; Gold Open Access

2-s2.0-85006410485

Guimarães J.T.F.; Souza-Filho P.W.M.; Alves R.; de Souza E.B.; da Costa F.R.; Reis L.S.; Sahoo P.K.; de Oliveira Manes C.-L.; Silva Júnior R.O.; Oti D.; Dall'Agnol R.

Guimarães, José Tasso Felix (24281342200); Souza-Filho, Pedro Walfir Martins (25029116500); Alves, Ronnie (7102691284); de Souza, Everaldo Barreiros (8609037700); da Costa, Francisco Ribeiro (25647425100); Reis, Luiza Santos (56255247400); Sahoo, Prafulla Kumar (49061518600); de Oliveira Manes, Carmem-Lara (12788728500); Silva Júnior, Renato Oliveira (56592915500); Oti, Douglas (24449736600); Dall'Agnol, Roberto (6602165694)

24281342200; 25029116500; 7102691284; 8609037700; 25647425100; 56255247400; 49061518600; 12788728500; 56592915500; 24449736600; 6602165694

Source and distribution of pollen and spores in surface sediments of a plateau lake in southeastern Amazonia

Quaternary International

10.1016/j.quaint.2014.06.004

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925300162&doi=10.1016%2fj.quaint.2014.06.004&partnerID=40&md5=aaab25540ff64288fb51b4cffa5e5d5b

Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil; Universidade Federal do Sul e Sudeste do Pará, Campus Universitário de Marabá - Campus II, Folha 17 Quadra 04 Lote especial, Nova Marabá, 68, Marabá, Pará, 505-080, Brazil

Guimarães J.T.F., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil, Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil; Souza-Filho P.W.M., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil, Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil; Alves R., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; de Souza E.B., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; da Costa F.R., Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil, Universidade Federal do Sul e Sudeste do Pará, Campus Universitário de Marabá - Campus II, Folha 17 Quadra 04 Lote especial, Nova Marabá, 68, Marabá, Pará, 505-080, Brazil; Reis L.S., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; Sahoo P.K., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; de Oliveira Manes C.-L., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; Silva Júnior R.O., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil, Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil; Oti D., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil; Dall'Agnol R., Instituto Tecnológico Vale, Rua Boaventura da Silva 955, Nazaré, Belém, Pará, 66055-090, Brazil, Universidade Federal do Pará, Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil

In the past two decades, several paleobotanical studies on lakes have indicated a drier climatic condition in Amazonia during the Last Glacial Maximum (LGM) and early-mid Holocene, which likely resulted in the contraction of the tropical forest and expansion of savanna. However, these investigations in the eastern Amazon are scarce, and the reliability and precision of the inference remains largely limited. In this study, palynological analyses were carried out in surficial sediments of Violão Lake, southeastern Amazonia, to assess the distribution and sources of pollen and spores from montane savanna and forest, based on surrounding vegetation types, catchment basin and wind patterns, and also to identify modern pollen rain characteristics of the ecosystems developed under edaphic conditions. Considering the spatial distribution of pollen and spores in the lake basin, the montane savanna pollen are predominant in the eastern and western borders and subordinate in the central portion of the lake, whereas those of forest formations are mainly present in its western margin. Pteridophytes and algae spores show a distinct surface distribution compared to montane savanna pollen, while the algae spores have a good correlation with forest formation pollen. The correlation of these data along with vegetation types of the catchment basin indicates that the absence of pollen grains from species, that present large occurrence along the catchment basin, may be partially related to phenological characteristics that avoided pollen losses. However, in general, montane savanna pollen in the bottom sediments tends to represent a signal of the regional vegetation developed over ferruginous duricrusts in the Serra do Carajás, while forest formation pollen may be used to identify changes in forest structure of the catchment basin of Violão Lake. As montane savanna is developed under edaphic conditions in hydric stress substrate, a systematic description of pollen grains clearly demonstrates that only changes in forest vegetation can be used as a reliable indicator of paleoclimate changes. © 2014 Elsevier Ltd and INQUA.

Amazon; Carajás; Lake sediments; Modern pollen rain; Montane savanna

Amazonia; algae; Pteridophyta; climate conditions; Holocene; lacustrine deposit; Last Glacial Maximum; paleoclimate; palynology; plateau; savanna; spatial distribution; spore; vegetation type

2-s2.0-84925300162

Matos V.R.; dos Santos F.A.R.

Matos, Vanessa Ribeiro (56105791600); dos Santos, Francisco de Assis Ribeiro (57222507544)

56105791600; 57222507544

The pollen spectrum of the propolis of Apis mellifera L. (Apidae) from the Atlantic Rainforest of Bahia, Brazil

10.1080/01916122.2016.1146175

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963995348&doi=10.1080%2f01916122.2016.1146175&partnerID=40&md5=409dfa492d13ffd2be0980a7ddeb7cca

Universidade Estadual de Feira de Santana (UEFS), Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Feira de Santana, 44036-900, Bahia, Brazil

Matos V.R., Universidade Estadual de Feira de Santana (UEFS), Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Feira de Santana, 44036-900, Bahia, Brazil; dos Santos F.A.R., Universidade Estadual de Feira de Santana (UEFS), Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Feira de Santana, 44036-900, Bahia, Brazil

Propolis produced by honeybees (Apis mellifera L.) over a period of 24 months, in an Atlantic Forest area in the municipality of Entre Rios (Bahia, Brazil), was analysed palynologically. Climate data (precipitation and temperature) for the area were obtained during the same time period. A total of 115 pollen types were found, of which 92 were identified as belonging to 40 plant families and 71 genera. The study recorded the occurrence of pollen types related to resiniferous plant species (i.e. Cecropia, Maytenus, Phyllanthus, Protium heptaphyllum, Schinus terebinthifolius, Spondias tuberosa, Symphonia globulifera and Tapirira guianensis). However, the greatest percentage found was for the Eucalyptus type (60%), which was present in a sample from January 2014. Pollen from resiniferous plants, such as Schinus terebinthifolius and Cecropia spp., were present in most samples. Pollen of Eucalyptus spp. were an important marker of propolis produced in the northern Atlantic Rainforest of Bahia. © 2016 AASP–The Palynological Society.

Bee products; melissopalynology; rainfall; resinous plants

Argentina; Atlantic Forest; Bahia; Brazil; Entre Rios; Apidae; Apis mellifera; Apoidea; Cecropia; Eucalyptus; Maytenus; Protium heptaphyllum; Schinus terebinthifolius; Spondias tuberosa; Symphonia globulifera; Tapirira guianensis; angiosperm; honeybee; paleobotany; palynology; plant community; pollen; rainfall; rainforest

V.R. Matos; Universidade Estadual de Feira de Santana (UEFS), Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Feira de Santana, 44036-900, Brazil; email: vanessamatos18@yahoo.com.br

Taylor and Francis Inc.

2-s2.0-84963995348

Mendonça Filho J.G.; Sommer M.G.; Klepzig M.C.; Mendonça J.O.; Silva T.F.; Kern M.L.; Menezes T.R.; Jasper A.; Silva M.C.; Santos L.G.C.

Mendonça Filho, J.G. (12766481400); Sommer, M.G. (6602534370); Klepzig, M.C. (56053163400); Mendonça, J.O. (36662356400); Silva, T.F. (24178611000); Kern, M.L. (56287319500); Menezes, T.R. (12766958200); Jasper, A. (7003460953); Silva, M.C. (57680501800); Santos, L.G.C. (35328003600)

12766481400; 6602534370; 56053163400; 36662356400; 24178611000; 56287319500; 12766958200; 7003460953; 57680501800; 35328003600

Permian carbonaceous rocks from the Bonito Coalfield, Santa Catarina, Brazil: Organic facies approaches

International Journal of Coal Geology

10.1016/j.coal.2012.07.008

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879030973&doi=10.1016%2fj.coal.2012.07.008&partnerID=40&md5=870338f716a1a22d1f18efa35d90d01a

Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Geoscience Institute, UFRGS, Porto Alegre, RS, Brazil; Petrobras R and D Center, Rio de Janeiro, RJ, Brazil; Centro Universitário UNIVATES, Lajeado, RS, Brazil

Mendonça Filho J.G., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Sommer M.G., Geoscience Institute, UFRGS, Porto Alegre, RS, Brazil; Klepzig M.C., Geoscience Institute, UFRGS, Porto Alegre, RS, Brazil; Mendonça J.O., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Silva T.F., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Kern M.L., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Menezes T.R., Petrobras R and D Center, Rio de Janeiro, RJ, Brazil; Jasper A., Centro Universitário UNIVATES, Lajeado, RS, Brazil; Silva M.C., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; Santos L.G.C., Palynofacies and Organic Facies Laboratory (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil

Permian sedimentary rocks of the Rio Bonito Formation, Paraná Basin, in the Santa Catarina state, Brazil, contain three important coal seams, in a descending order: Barro Branco, Bonito Superior and Pre-Bonito Superior. Artinskian carbonaceous shale samples corresponding to the so called "Bonito coal" were sampled at the mine face of the coal bed ofthe Bonito I underground mine. These samples were analyzed in order to discuss their petrographical, geochemical, palynological, and paleobotanical characteristics. Palynologicalanalyses demonstrated abundant and well-preserved palynomorphs showing a dominance of bisaccate pollen grains related to gymnospermic plants. Wood fragments preserved as coalified compression show the presence of lycophyta. Palynofacies on samples demonstrated good results for the recognition of preserved organic matter and changes in paleoenvironmental conditions along the sedimentary sequence. Palynofacies and palynological analyses indicate changes in paleoecological conditions that have favored the development of different plant communities during the depositional time span from a forested gymnosperm at the baseto a lycophyte, arborescent plant dominated scenario at the top suggesting a shift to coastal environment. The microscopic maceral-group analyses reveal a predominance of liptinite and vitrinite over inertinite, while among microlithotypes, carbargilite is abundant. The joint occurrence of inertinite as a maceral in the carbonaceous rock and charcoal in associated shales suggests that the mire and near surroundings were regularly subject to wildfires. Mean random vitrinite reflectance (Rr) varies from 0.88 to 1.04%. The liptinite spectral fluorescence parameters obtained for samples show the Λmax values varying from610 to 650 indicating equivalent vitrinite reflectance (Rreq) values from 0.83 to 1.10%. These results show that the equivalent vitrinite reflectance (Rreq) correlates well with the measured vitrinite reflectance (Rr). The "Bonito Coal" is a high-volatile bituminous coal according to the ISO, 11760: 2005 standard. Total organic carbon varies from 2.4 to 44.0 wt.% and sulfur is present in moderate to high contents. GC-MS analyses evidenced a predominance of even saturated hydrocarbons and the presence of aß-hopanes and aßß-steranes. © 2012 Elsevier B.V.

Biomarkers; Carbonaceous shale; Charcoal; Palynofacies; Palynology

Brazil; Santa Catarina; Gymnospermae; Katsuwonus pelamis; Lycopodiophyta; Biomarkers; Bituminous coal; Carbon; Charcoal; Coal; Coal deposits; Coal mines; Organic carbon; Plants (botany); Reflection; Sedimentary rocks; Sedimentology; Shale; Palynofacies; Palynological analysis; Palynology; Rio bonito formations; Saturated hydrocarbons; Spectral fluorescence; Total Organic Carbon; Vitrinite reflectance; biomarker; bituminous coal; charcoal; coal mine; coal seam; environmental change; facies analysis; gas chromatography; mass spectrometry; organic matter; paleoenvironment; palynology; Permian; shale; vitrinite reflectance; Carbonaceous shale

J.G. Mendonça Filho; Laboratório de Palinofácies and Fácies Organica (LAFO)/DEGL/IGEO/CCMN/UFRJ, Cidade Universitária, CEP 21.941-916, Rio de Janeiro, RJ, Av. Athos da Silveira, 274 - Predio do CCMN, Sala JI-020, Brazil; email: graciano@geologia.ufrj.br

2-s2.0-84879030973

Esperança Júnior M.G.F.; Cybis G.B.; Iannuzzi R.

Esperança Júnior, Mário G. F. (57216754453); Cybis, Gabriela B. (55090257900); Iannuzzi, Roberto (6603970107)

57216754453; 55090257900; 6603970107

An efficient method for estimating vein density of Glossopteris and its application

10.1111/pala.12640

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149216960&doi=10.1111%2fpala.12640&partnerID=40&md5=86ef46ddb509ab9b47230111bd7f47cd

Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, Brazil; Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Instituto de Matemática e Estatística, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Esperança Júnior M.G.F., Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, Brazil, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Cybis G.B., Instituto de Matemática e Estatística, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil; Iannuzzi R., Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Glossopteris-type leaves are the most abundant floristic element from the Gondwanan continent and are recorded throughout the Permian, which was a period of extreme icehouse-to-hothouse climatic global change. Fossil leaf traits can be useful for the reconstruction of palaeoenvironments and identification of climatic changes throughout geological time, but the conservative morphology of Glossopteris leaves has thus far made them difficult to use for this purpose. If the characters of Glossopteris can be better quantified then it should make them useful for tracking environmental changes over a wide geographical area and over a long time interval. Venation density is a highly variable leaf trait that might be useful for this purpose. This trait can be calculated, usually as vein length per centimetre squared, but this can be a time-consuming procedure. In this paper we propose a new rapid method to estimate venation density in a conical sector of Glossopteris leaf lamina using an accurate linear model whose predictors are three linear venation densities, measured as veins per centimetre. In addition to substantially reducing the data collection time, it is less biased and more reproducible than methods applied previously with this leaf type. Using this more robust method, preliminary results significantly distinguish the venation densities of leaves produced in wet and drier ecosystems, matching a pattern similar to modern plants. This is the first survey using a large sample size to reveal that environmental stress controlled the vein architecture of Palaeozoic plants, in a manner similar to plants in modern ecosystems. © 2023 The Palaeontological Association.

Glossopteris; Gondwana; palaeobotany; palaeoecology; Permian

environmental stress; floristics; Gondwana; leaf; paleobotany; paleoecology; Permian

M.G.F. Esperança Júnior; Departamento de Geologia, Universidade Federal do Ceará, Fortaleza, Brazil; email: mario.esperancajr@gmail.com

John Wiley and Sons Inc

2-s2.0-85149216960

Uhl, Dieter (56275118900); Jasper, André (7003460953)

56275118900; 7003460953

Charred conifer remains from the Late Oligocene-Early Miocene of Northern Hesse (Germany)

Acta Palaeobotanica

10.2478/acpa-2018-0012

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059538661&doi=10.2478%2facpa-2018-0012&partnerID=40&md5=d5a5a03648db98237a70f1ed37812ec8

Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade Do Vale Do Taquari-UNIVATES (PPGAD/UNIVATES), Lajeado, Rio Grande do Sul, Brazil

Uhl D., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Jasper A., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany, Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade Do Vale Do Taquari-UNIVATES (PPGAD/UNIVATES), Lajeado, Rio Grande do Sul, Brazil

Fire is an important constituent of many modern and fossil ecosystems. During the last decades a large number of studies have dealt with fires in pre-Cenozoic ecosystems. Evidence for the occurrence of Palaeogene and Neogene wildfires (e.g. in the form of pyrogenic inertinites in lignite deposits) is geographically and stratigraphically widespread. However, as compared to earlier periods (i.e. the Permian and Cretaceous), fewer studies have focussed so far on plants burnt (or charred) in wildfires from these periods, even though these periods are of considerable interest for our understanding of the evolution of modern ecosystems. Here we report the occurrence of charred wood remains belonging to different conifer taxa from the base seam of the former Frielendorf opencast lignite mine in Northern Hesse (Germany). These findings are evidence that these conifers, and the types of vegetation they were growing in, were affected by wildfires occurring during the Late Oligocene-Early Miocene in this region. © 2018 Dieter Uhl et al., published by Sciendo.

conifers; Cupressaceae; Frielendorf Formation; Geoarchive Marburg; lignite; Palaeo-wildfire

Germany; Hesse; Coniferophyta; Cupressaceae; coniferous tree; fire history; fossil record; geological structure; lignite; Miocene; Oligocene; paleobotany; paleoecology; Paleogene; Permian; wildfire; wood

D. Uhl; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Frankfurt am Main, Senckenberganlage 25, 60325, Germany; email: dieter.uhl@senckenberg.de

All Open Access; Gold Open Access; Green Open Access

2-s2.0-85059538661

dos Santos Filho E.B.; Brum A.S.; de Souza G.A.; Figueiredo R.G.; Usma C.D.; Ricetti J.H.Z.; Trevisan C.; Leppe M.; Sayão J.M.; Lima F.J.; Oliveira G.R.; Kellner A.W.A.

dos Santos Filho, Edilson Bezerra (57199507138); Brum, Arthur S. (57044570300); de Souza, Geovane A. (57204120660); Figueiredo, Rodrigo G. (26428124000); Usma, Cristian D. (57222598770); Ricetti, João Henrique Z. (56321165500); Trevisan, Cristine (56016869300); Leppe, Marcelo (6506520641); Sayão, Juliana M. (6507916910); Lima, Flaviana J. (56481285700); Oliveira, Gustavo R. (57201211491); Kellner, Alexander W. A. (7006207027)

57199507138; 57044570300; 57204120660; 26428124000; 57222598770; 56321165500; 56016869300; 6506520641; 6507916910; 56481285700; 57201211491; 7006207027

First record of insect-plant interaction in Late Cretaceous fossils from Nelson Island (South Shetland Islands Archipelago), Antarctica

Anais da Academia Brasileira de Ciencias

10.1590/0001-3765202320231268

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179641010&doi=10.1590%2f0001-3765202320231268&partnerID=40&md5=5236654a62643d5695033fc23e12c47e

Programa de Pós-Graduação em Geociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, PE, Recife, 50670-901, Brazil; Programa de Pós-Graduação em Zoologia, Museu Nacional/Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil; Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Paleobiologia e Paleogeografia Antártica, Quinta da Boa Vista, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil; Universidade Federal do Espírito Santo, Centro de Ciências Exatas, Naturais e da Saúde, Departamento de Biologia, Alto Universitário, s/n, Guararema, ES, Alegre, 29500-000, Brazil; Universidade Federal de Pernambuco, Núcleo de Estudos Geoquímicos, Laboratório de Isótopos Estáveis, NEG-LABISE/CTG, Av. Acadêmico Hélio Ramos, s/n, PE, Recife, 50740-530, Brazil; Programa de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do Sul, Instituto de Geociências, Av. Bento Gonçalves, 9500, RS, Porto Alegre, 91509-900, Brazil; Universidade do Contestado, Centro de Pesquisas Paleontológicas, Av. Pres. Nereu Ramos, 1071, SC, Mafra, 89304-076, Brazil; Antarctic and Patagonia Paleobiology Laboratory, Chilean Antarctic Institute-INACH, Lautaro Navarro 1245, Punta Arenas, Chile; Universidade Federal de Pernambuco, Laboratório de Plantas do Gondwana, Centro Acadêmico de Vitória, Rua do Alto Reservatório, s/n, Bela Vista, PE, Vitória de Santo Antão, 55608-680, Brazil; Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia e Sistemática, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, PE, Recife, 52171-900, Brazil; Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Sistemática e Tafonomia de Vertebrados Fósseis, Quinta da Boa Vista, s/n, São Cristóvão, RJ, Rio de Janeiro, Brazil

dos Santos Filho E.B., Programa de Pós-Graduação em Geociências, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, PE, Recife, 50670-901, Brazil; Brum A.S., Programa de Pós-Graduação em Zoologia, Museu Nacional/Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil, Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Paleobiologia e Paleogeografia Antártica, Quinta da Boa Vista, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil; de Souza G.A., Programa de Pós-Graduação em Zoologia, Museu Nacional/Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, s/n, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil, Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Paleobiologia e Paleogeografia Antártica, Quinta da Boa Vista, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil; Figueiredo R.G., Universidade Federal do Espírito Santo, Centro de Ciências Exatas, Naturais e da Saúde, Departamento de Biologia, Alto Universitário, s/n, Guararema, ES, Alegre, 29500-000, Brazil; Usma C.D., Universidade Federal de Pernambuco, Núcleo de Estudos Geoquímicos, Laboratório de Isótopos Estáveis, NEG-LABISE/CTG, Av. Acadêmico Hélio Ramos, s/n, PE, Recife, 50740-530, Brazil; Ricetti J.H.Z., Programa de Pós-Graduação em Geociências, Universidade Federal do Rio Grande do Sul, Instituto de Geociências, Av. Bento Gonçalves, 9500, RS, Porto Alegre, 91509-900, Brazil, Universidade do Contestado, Centro de Pesquisas Paleontológicas, Av. Pres. Nereu Ramos, 1071, SC, Mafra, 89304-076, Brazil; Trevisan C., Antarctic and Patagonia Paleobiology Laboratory, Chilean Antarctic Institute-INACH, Lautaro Navarro 1245, Punta Arenas, Chile; Leppe M., Antarctic and Patagonia Paleobiology Laboratory, Chilean Antarctic Institute-INACH, Lautaro Navarro 1245, Punta Arenas, Chile; Sayão J.M., Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Paleobiologia e Paleogeografia Antártica, Quinta da Boa Vista, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil; Lima F.J., Universidade Federal de Pernambuco, Laboratório de Plantas do Gondwana, Centro Acadêmico de Vitória, Rua do Alto Reservatório, s/n, Bela Vista, PE, Vitória de Santo Antão, 55608-680, Brazil; Oliveira G.R., Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia e Sistemática, Rua Dom Manuel de Medeiros, s/n, Dois Irmãos, PE, Recife, 52171-900, Brazil; Kellner A.W.A., Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Paleobiologia e Paleogeografia Antártica, Quinta da Boa Vista, São Cristóvão, RJ, Rio de Janeiro, 20940-040, Brazil, Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratório de Sistemática e Tafonomia de Vertebrados Fósseis, Quinta da Boa Vista, s/n, São Cristóvão, RJ, Rio de Janeiro, Brazil

Despite the enormous paleobotanical record on different islands of the Antarctic Peninsula, the evidence of insect activity associated with fossilized plants is scarce. Here we report the first evidence of insect-plant interaction from Cretaceous deposits, more precisely from a new locality at the Rip Point area, Nelson Island (Antarctic Peninsula). The macrofossil assemblage includes isolated Nothofagus sp. leaf impressions, a common component of the Antarctic paleoflora. Two hundred leaves were examined, of which 15 showed evidence of insect activity, displaying variations in size, shape, and preservation. Two types of interaction damage, galls and mines, were identified. A single specimen retained a circular scar recognized as galling scar, while meandering tracks were considered mines. These traces of herbivore insect activity, correspond to the oldest known record of this type of interaction of West Antarctica and the oldest record of insect-plant interaction in Nothofagus sp. reported so far. © 2023, Academia Brasileira de Ciencias. All rights reserved.

Antarctica; Cretaceous; insect-plant interaction; Nelson Island; Paleoecology

Animals; Antarctic Regions; Cicatrix; Fossils; Insecta; Plant Leaves; animal; Antarctica; fossil; insect; plant leaf; scar

E.B. dos Santos Filho; Programa de Pós-Graduação em Geociências, Universidade Federal de Pernambuco, Recife, Av. Prof. Moraes Rego, 1235, Cidade Universitária, PE, 50670-901, Brazil; email: edilson.bsf@gmail.com

Academia Brasileira de Ciencias

Anais Acad. Bras. Cienc.

All Open Access; Gold Open Access

2-s2.0-85179641010

Francisquini M.I.; Lorente F.L.; Ruiz Pessenda L.C.; Buso Junior A.A.; Mayle F.E.; Lisboa Cohen M.C.; França M.C.; Bendassolli J.A.; Fonseca Giannini P.C.; Schiavo J.; Macario K.

Francisquini, Mariah Izar (55427393300); Lorente, Flávio Lima (37261777600); Ruiz Pessenda, Luiz Carlos (6603793283); Buso Junior, Antonio Alvaro (57218569108); Mayle, Francis Edward (6701544817); Lisboa Cohen, Marcelo Cancela (57218566135); França, Marlon Carlos (24280927300); Bendassolli, José Albertino (6603444304); Fonseca Giannini, Paulo César (7004349366); Schiavo, JolimarAntonio (6602407965); Macario, Kita (25825285800)

55427393300; 37261777600; 6603793283; 57218569108; 6701544817; 57218566135; 24280927300; 6603444304; 7004349366; 6602407965; 25825285800

Cold and humid Atlantic Rainforest during the last glacial maximum, northern Espírito Santo state, southeastern Brazil

Quaternary Science Reviews

10.1016/j.quascirev.2020.106489

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089580893&doi=10.1016%2fj.quascirev.2020.106489&partnerID=40&md5=6928f22ba07b67ca02082071c57e4b9c

Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; University of Reading, PO Box 217, Whiteknights, United Kingdom; Federal University of Pará, R. Augusto Corrêa, 1 - Guamá, Belém, 66075-110, PA, Brazil; Federal Institute of Pará, Oceanography & Paleoenvironmental Studies, Belém, 66090-100, PA, Brazil; Geoscience Institute – University of São Paulo, São Paulo, 05508-080, SP, Brazil; Mato Grosso Do Sul State University, Soil Department, Rodovia Aquidauana, Km 12, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil; Physics Department, LAC-UFF AMS Laboratory-Fluminense Federal University, Niterói, 24220-900, RJ, Brazil

Francisquini M.I., Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; Lorente F.L., Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; Ruiz Pessenda L.C., Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; Buso Junior A.A., Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; Mayle F.E., University of Reading, PO Box 217, Whiteknights, United Kingdom; Lisboa Cohen M.C., Federal University of Pará, R. Augusto Corrêa, 1 - Guamá, Belém, 66075-110, PA, Brazil; França M.C., Federal Institute of Pará, Oceanography & Paleoenvironmental Studies, Belém, 66090-100, PA, Brazil; Bendassolli J.A., Center for Nuclear Energy in Agriculture - University of São Paulo, Avenida Centenário 303, Piracicaba, 13416-000, SP, Brazil; Fonseca Giannini P.C., Geoscience Institute – University of São Paulo, São Paulo, 05508-080, SP, Brazil; Schiavo J., Mato Grosso Do Sul State University, Soil Department, Rodovia Aquidauana, Km 12, Aquidauana, 79200-000, Mato Grosso do Sul, Brazil; Macario K., Physics Department, LAC-UFF AMS Laboratory-Fluminense Federal University, Niterói, 24220-900, RJ, Brazil

The Atlantic Rainforest, covering the area from northern Espirito Santo to Southern Bahia states, has been considered as a stable forest during Pleistocene Glacial times. Aside from modelling and phylogenetic studies, this hypothesis has never been tested with empirical, fossil pollen, paleo-vegetation data. By using palynology, radiocarbon dating, and carbon and nitrogen elemental and isotopic analyses of organic matter, we reconstructed the vegetation dynamics and inferred climatic changes since the Late Pleistocene in the centre of this global biodiversity hotspot. Our results show that the forest biome was resilient to Last Glacial Maximum - LGM conditions, but that the floristic composition differed from that of today. Since the late glacial, the floristic composition of the dense forest changed from cold- to warm-adapted taxa. Structural, as well as floristic, changes occurred during drier conditions of the early and middle Holocene, with an opening of the forest, providing insights into the type of vegetation impacts that might be expected under predicted future drought. © 2020 Elsevier Ltd

Carbon isotopes; LGM; Palynology; Radiocarbon dating; Tropical forest

Bahia; Brazil; Espirito Santo; Biodiversity; Forestry; Vegetation; Carbon and nitrogen; Elemental and isotopic analysis; Floristic compositions; Last Glacial Maximum; Phylogenetic studies; Pleistocene glacial; Southeastern Brazil; Vegetation dynamics; biodiversity; carbon isotope; floristics; fossil record; Holocene; humid environment; isotopic analysis; Last Glacial Maximum; nitrogen isotope; paleobotany; phylogenetics; pollen; radiocarbon dating; rainforest; vegetation dynamics; Glacial geology

M.I. Francisquini; Center for Nuclear Energy in Agriculture - University of São Paulo, Piracicaba, Avenida Centenário 303, 13416-000, Brazil; email: mariah@cena.usp.br

All Open Access; Green Open Access

2-s2.0-85089580893

Manfroi J.; Uhl D.; Guerra-Sommer M.; Francischini H.; Martinelli A.G.; Soares M.B.; Jasper A.

Manfroi, Joseline (55353315300); Uhl, Dieter (56275118900); Guerra-Sommer, Margot (6602534370); Francischini, Heitor (56731141200); Martinelli, Agustín Guillermo (7101637558); Soares, Marina Bento (25947824500); Jasper, André (7003460953)

55353315300; 56275118900; 6602534370; 56731141200; 7101637558; 25947824500; 7003460953

Extending the database of Permian palaeo-wildfire on Gondwana: Charcoal remains from the Rio do Rasto Formation (Paraná Basin), Middle Permian, Rio Grande do Sul State, Brazil

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2015.07.003

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937611158&doi=10.1016%2fj.palaeo.2015.07.003&partnerID=40&md5=99ea18c35d9914dfe739fd5e486b1976

Programa de Pós-Graduação em Ambiente e Desenvolvimento (PPGAD), Centro Universitário UNIVATES, 95.900-000 Lajeado, Rio Grande do Sul, Brazil; Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, 60325, Germany; Senckenberg Center for Human Evolution and Palaeoenvironment, Institut für Geowissenschaften, Universität Tübingen, Tübingen, 72076, Germany; Programa de Pós-Graduação em Geosciências (PPGGeo), Universidade Federal do Rio Grande do Sul, UFRGS, 91.509-900 Porto Alegre, Rio Grande do Sul, Brazil

Manfroi J., Programa de Pós-Graduação em Ambiente e Desenvolvimento (PPGAD), Centro Universitário UNIVATES, 95.900-000 Lajeado, Rio Grande do Sul, Brazil; Uhl D., Programa de Pós-Graduação em Ambiente e Desenvolvimento (PPGAD), Centro Universitário UNIVATES, 95.900-000 Lajeado, Rio Grande do Sul, Brazil, Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt am Main, 60325, Germany, Senckenberg Center for Human Evolution and Palaeoenvironment, Institut für Geowissenschaften, Universität Tübingen, Tübingen, 72076, Germany; Guerra-Sommer M., Programa de Pós-Graduação em Geosciências (PPGGeo), Universidade Federal do Rio Grande do Sul, UFRGS, 91.509-900 Porto Alegre, Rio Grande do Sul, Brazil; Francischini H., Programa de Pós-Graduação em Geosciências (PPGGeo), Universidade Federal do Rio Grande do Sul, UFRGS, 91.509-900 Porto Alegre, Rio Grande do Sul, Brazil; Martinelli A.G., Programa de Pós-Graduação em Geosciências (PPGGeo), Universidade Federal do Rio Grande do Sul, UFRGS, 91.509-900 Porto Alegre, Rio Grande do Sul, Brazil; Soares M.B., Programa de Pós-Graduação em Geosciências (PPGGeo), Universidade Federal do Rio Grande do Sul, UFRGS, 91.509-900 Porto Alegre, Rio Grande do Sul, Brazil; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento (PPGAD), Centro Universitário UNIVATES, 95.900-000 Lajeado, Rio Grande do Sul, Brazil

Macroscopic charcoal has been recovered from a bonebed from the Barro Alto outcrop, Middle Permian (Guadalupian), Rio do Rasto Formation, in the southernmost part of the Paraná Basin, Brazil. During this time, a global biotic crisis was taking place and changes in the palaeofloristic composition can be observed. Records of palaeowildfires from the Guadalupian Period are scarce on a global scale. In the Paraná Basin low plant diversity, compared to the entirety of Gondwana, persists and just a few plant bearing localities have so far been described from the northern part of the basin. In the studied locality, macroscopic charcoal could be detected in an outcropping bonebed and the occurrence of palaeo-wildfires was confirmed. Besides representing the first palaeobotanical data for the Guadalupian of the southern part of the Paraná Basin, the charcoal remains analyzed here are also a significant record of the local environmental conditions during the increase in aridity observed during the Guadalupian and Lopingian in Gondwana. This contributes to the understanding of regional changes that took place during this interval. © 2015 Elsevier B.V.

Bonebed; Guadalupian; Gymnosperm wood; Macroscopic charcoal

Brazil; Parana Basin; Rio Grande do Sul; Gymnospermae; charcoal; database; floristics; global change; Gondwana; outcrop; paleobotany; paleoecology; paleoenvironment; Permian; species diversity; wildfire; wood

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-84937611158

Guarinello de Oliveira Portes M.C.; DeForest Safford H.; Montade V.; Behling H.

Guarinello de Oliveira Portes, Maria Carolina (57204737836); DeForest Safford, Hugh (15838863000); Montade, Vincent (37029868400); Behling, Hermann (7005966519)

57204737836; 15838863000; 37029868400; 7005966519

Pollen rain–vegetation relationship along an elevational gradient in the Serra dos Órgãos National Park, southeastern Brazil

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2020.104314

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091390720&doi=10.1016%2fj.revpalbo.2020.104314&partnerID=40&md5=f1459f9a17e0d2ea2a178fc9db8cdd50

University of Goettingen, Albrecht-von-Haller Institute for Plant Sciences, Department of Palynology and Climate Dynamics, Goettingen, Germany; Instituto Chico Mendes de Conservação de Biodiversidade (ICMBio), Brazil; CNPq-Brazil Scholarship, Brazil; USDA Forest Service, Pacific Southwest Region, Vallejo, CA, United States; Department of Environmental Science and Policy, University of California, Davis, CA, United States; Université de Montpellier, Institut des Sciences de l'Evolution de Montpellier, CNRS, IRD, EPHE, Montpellier, France

Guarinello de Oliveira Portes M.C., University of Goettingen, Albrecht-von-Haller Institute for Plant Sciences, Department of Palynology and Climate Dynamics, Goettingen, Germany, Instituto Chico Mendes de Conservação de Biodiversidade (ICMBio), Brazil, CNPq-Brazil Scholarship, Brazil; DeForest Safford H., USDA Forest Service, Pacific Southwest Region, Vallejo, CA, United States, Department of Environmental Science and Policy, University of California, Davis, CA, United States; Montade V., University of Goettingen, Albrecht-von-Haller Institute for Plant Sciences, Department of Palynology and Climate Dynamics, Goettingen, Germany, Université de Montpellier, Institut des Sciences de l'Evolution de Montpellier, CNRS, IRD, EPHE, Montpellier, France; Behling H., University of Goettingen, Albrecht-von-Haller Institute for Plant Sciences, Department of Palynology and Climate Dynamics, Goettingen, Germany

We analyzed modern pollen deposition along an altitudinal gradient in the Brazilian southeastern coastal mountains between 1600 and 2200 m elevation in order to investigate the relationship between modern vegetation and pollen rain, within vegetation composed of montane and upper montane forest in a mosaic with campos de altitude (CDA). The results revealed that the CDA pollen assemblage represents a much larger source area than the forest pollen assemblage, which is comprised of more local taxa. Anemophilous pollen from vegetation at lower elevations is overrepresented in the higher elevation pollen traps. Although arboreal taxa dominate the pollen assemblages – even in the grassland pollen traps – the composition of the pollen traps can be confidently related to the vegetation surrounding the collection site. To improve distinction between grassland and forest dominance in a complex environmental mosaic subject to temporal dynamism, we selected a suite of arboreal pollen taxa aiming to reduce the influence of over- and underrepresentation of some pollen taxa in such kind of environment. Our findings permit more robust interpretation of paleoecological and -geographical relationships between forest and CDA and build a firmer foundation for understanding how future climatic change may impact montane vegetation in SE Brazil. © 2020 Elsevier B.V.

Campos de altitude (high elevation grassland); Modern pollen rain; Tropical mountains; Tropical South America; Upper montane forest

Brazil; Minas Gerais; Serra do Cipo National Park; biostratigraphy; climate change; dominance; elevation; environmental gradient; fossil record; montane forest; paleobotany; paleoenvironment; palynology; pollen rain; vegetation cover

M.C. Guarinello de Oliveira Portes; Instituto Chico Mendes de Conservação da Biodiversidade - ICMBio, NGI Curitiba, Curitiba, Brazil; email: maria-carolina.portes@icmbio.gov.br

Rev. Palaeobot. Palynol.

All Open Access; Green Open Access

2-s2.0-85091390720

Arai M.; Fernandes L.A.

Arai, Mitsuru (15762171500); Fernandes, Luiz Alberto (7103335018)

15762171500; 7103335018

Lower Campanian palynoflora from the Araçatuba Formation (Bauru Group), Southeastern Brazil

Cretaceous Research

10.1016/j.cretres.2023.105586

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85163726828&doi=10.1016%2fj.cretres.2023.105586&partnerID=40&md5=b7d4a88113de47e2d65fa9c2b90fc881

Centro de Ciências Naturais Aplicadas (UNESPetro), Universidade Estadual Paulista (UNESP), CP 178, SP, Rio Claro, CEP 13560-900, Brazil; Programa de pós-graduação em Geologia, Universidade Federal do Paraná (UFPR), PR, Curitiba, Brazil

Arai M., Centro de Ciências Naturais Aplicadas (UNESPetro), Universidade Estadual Paulista (UNESP), CP 178, SP, Rio Claro, CEP 13560-900, Brazil; Fernandes L.A., Programa de pós-graduação em Geologia, Universidade Federal do Paraná (UFPR), PR, Curitiba, Brazil

This paper presents the first record of a rich palynoflora within the Bauru Group (Cretaceous of southeastern Brazil). The Bauru Group is rich in animal fossils, but has been virtually barren in palynomorphs. There are only two previous palynological works from the Bauru Group: (1) that of the São Carlos Formation, whose outcrop is located outside the formal boundary of the Bauru Basin, and (2) the extremely poor and poorly preserved palynoflora from a coprolite of the Marília Formation. The material studied here, from the Araçatuba Formation, is the only one palyniferous sample from a groundwater well drilled in the central-west region of the state of São Paulo. The Araçatuba Formation, constituted by swamp deposits, rests directly on the basalts of the Serra Geral Group. The Araçatuba palynoflora contains index palynomorphs – Cretacaeiporites polygonalis, C. scabratus and Hexaporotricolpites emelianovi – signifying an early Campanian age. Moreover, the absence of Santonian indices and of older ages, confirms attribution to the lower Campanian. In paleoclimatic terms, the assemblage suggests aridity, given the abundance of ephedroid pollen grains and the low frequency of pteridophytic spores. The occurrence of spores of water ferns confirms the paludal setting. The aqueous environment is also suggested by the occurrence of zooclasts derived from crustacean eggs. However, the virtual absence of phytoplankton may indicate the ephemeral nature of the water body. © 2023 Elsevier Ltd

Brazil; Cretaceous; Paleoclimatology; Palynology; Palynostratigraphy

Aracatuba; Brazil; Sao Paulo [Brazil]; Campanian; flora; paleobotany; paleoclimate; palynology; stratigraphy

M. Arai; Centro de Ciências Naturais Aplicadas (UNESPetro), Universidade Estadual Paulista (UNESP), Rio Claro, CP 178, SP, CEP 13560-900, Brazil; email: mitsuru.arai@gmail.com

2-s2.0-85163726828

Iannuzzi R.; Tybusch G.P.

Iannuzzi, R. (6603970107); Tybusch, G.P. (35749318200)

6603970107; 35749318200

Re-evaluation of the genus rubidgea in the lower permian of the paraná basin, brazil, and its biostratigraphic consequence; [Reavaliação do género Rubidgea, no Pérmico Inferior da Bacia do Paraná, Brasil, e suas consequências bioestratigráficas]

Comunicacoes Geologicas

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929075174&partnerID=40&md5=fc473fd8a06b820948ba51478d530aa0

Instituto de Geociências, Universidade Federal Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91 540-000, RS, Brazil

Iannuzzi R., Instituto de Geociências, Universidade Federal Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91 540-000, RS, Brazil; Tybusch G.P., Instituto de Geociências, Universidade Federal Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91 540-000, RS, Brazil

The plant megafossil specimens revised in this study came from the outcrops located in the São Paulo and Rio Grande do Sul states and positioned stratigraphically on top of the Itararé Group and/or base of the Rio Bonito (= Tietê) Formation, Lower Permian of the Paraná Basin. The study material comprises leaves fragments preserved as impressions, previously included in the morphogenus Rubidgea because of their supposed gangamopterid venation pattern, lacking anastomoses. However, re-evaluation of this material showed that these leaves bear at some degree, rare anastomoses along the lamina. Based on this observation, we proposed that these leaves should be transferred to the morphogenus Gangamopteris, which displays this type of venation. Consequently, the reclassification of these glossopterids into species of Gangamopteris made possible a more direct correlation between the Early Permian strata in the north and south portions of the Paraná Basin based on megafloristic comparison. © 2014 LNEG – Laboratório Nacional de Geologia e Energia IP.

Brazil; Gangamopteris; Lower Permian; Paraná Basin; Rubidgea

Brazil; Parana Basin; Gangamopteris; biostratigraphy; classification; floristics; paleobotany; paleontology; Permian; stratigraphic correlation; taxonomy

Laboratorio Nacional de Energia e Geologia

Comunicacoes Geologicas

2-s2.0-84929075174

Martins T.R.B.; Souza-Souza R.M.B.; Leite W.P.; Esteves R.L.; Mendonça C.B.F.; Gonçalves-Esteves V.

Martins, Thayná Rosa Batista (58663841100); Souza-Souza, Raquel Maria Batista (55235094200); Leite, Wellerson Picanço (57208323790); Esteves, Roberto Lourenço (23011391100); Mendonça, Cláudia Barbieri Ferreira (55407444800); Gonçalves-Esteves, Vania (23011824700)

58663841100; 55235094200; 57208323790; 23011391100; 55407444800; 23011824700

Palynotaxonomy of species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil

10.1080/01916122.2023.2262530

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85174798891&doi=10.1080%2f01916122.2023.2262530&partnerID=40&md5=44462cd8f549022c1deb7b65191c3d66

Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil; Department of Plant Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil

Martins T.R.B., Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil; Souza-Souza R.M.B., Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil; Leite W.P., Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil; Esteves R.L., Department of Plant Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil; Mendonça C.B.F., Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil; Gonçalves-Esteves V., Department of Botany, National Museum, Federal University of Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, Brazil

This article presents a pollen study of 13 species of Dendrophorbium (Asteraceae: Senecioneae) occurring in Brazil. Dendrophorbium has species distributed in the South and Southeast regions of the Brazilian territory that were previously grouped in Senecio Myriocephalus sect. and later Dendrophorbium was elevated to the rank of genus, considering the section Myriocephalus as a synonym of Dendrophorbium. The aim of this study is to advance knowledge of the pollen characteristics of the genus and thus contribute to the taxonomy of the group. The botanical material was collected from specimens deposited in national herbaria. Floral buds were acetolysed for light microscopic analysis. Pollen sediments were mounted on slides with glycerinated gelatin and analyzed under a light microscope. Measurements were taken of the diameters and thickness of exine layers of pollen grains. Examination showed pollen grains to be monadic, isopolar, medium-sized, oblate-spheroidal to prolate-spheroidal, and 3-colporate. The endoaperture has median constriction in most species, except in D. pellucidinerve. The sexine is thicker than the nexine and echinate, with large perforations at the base of echinae. The exine is caveate. Based on the results, it can be concluded that the pollen grains of the 13 Dendrophorbium species are homogeneous and can be differentiated by aperture shape and dimensions and echinus characteristics. © 2023 AASP–The Palynological Society.

Compositae; morphology; palynology; taxonomy

Brazil; dicotyledon; morphology; paleobotany; palynology; pollen; taxonomy

V. Gonçalves-Esteves; Department of Botany, National Museum, Federal University of Rio de Janeiro, Rio de Janeiro, Quinta da Boa Vista, Brazil; email: esteves.vr@gmail.com

Taylor and Francis Ltd.

2-s2.0-85174798891

Oliveira-Filho A.T.; Cardoso D.; Schrire B.D.; Lewis G.P.; Pennington R.T.; Brummer T.J.; Rotella J.; Lavin M.

Oliveira-Filho, A.T. (6604028763); Cardoso, D. (24376377600); Schrire, B.D. (6602178717); Lewis, G.P. (7402636496); Pennington, R.T. (7006229917); Brummer, T.J. (55756245500); Rotella, J. (6603709395); Lavin, M. (7102176161)

6604028763; 24376377600; 6602178717; 7402636496; 7006229917; 55756245500; 6603709395; 7102176161

Stability structures tropical woody plant diversity more than seasonality: Insights into the ecology of high legume-succulent-plant biodiversity

South African Journal of Botany

10.1016/j.sajb.2013.06.010

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887821165&doi=10.1016%2fj.sajb.2013.06.010&partnerID=40&md5=2b14dceb961b88d64e845824902804b7

Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Belo Horizonte, Brazil; Herbário HUEFS, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, Bahia, Av. Transnordestina, s/n, Novo Horizonte, Brazil; Herbarium Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, United Kingdom; Tropical Biology Group, Royal Botanic Garden Edinburgh, EH3 5LR, 20a Inverleith Row, United Kingdom; Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, United States; Ecology, Montana State University, Bozeman, MT 59717, United States; Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, United States

Oliveira-Filho A.T., Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Minas Gerais, Belo Horizonte, Brazil; Cardoso D., Herbário HUEFS, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, Bahia, Av. Transnordestina, s/n, Novo Horizonte, Brazil; Schrire B.D., Herbarium Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, United Kingdom; Lewis G.P., Herbarium Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, United Kingdom; Pennington R.T., Tropical Biology Group, Royal Botanic Garden Edinburgh, EH3 5LR, 20a Inverleith Row, United Kingdom; Brummer T.J., Land Resources and Environmental Sciences, Montana State University, Bozeman, MT 59717, United States; Rotella J., Ecology, Montana State University, Bozeman, MT 59717, United States; Lavin M., Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, United States

Phylogenies of legume taxa are ecologically structured along a tropical seasonality gradient, which suggests phylogenetic niche conservatism. This seasonality gradient spans Neotropical wet forests, savannas, and highly seasonal drought-prone woody vegetation known as the succulent biome. Ecological phylogenetic structure was investigated using a community phylogenetic approach. We further analyzed bioclimatic and other independent variables that potentially explained phylogenetic beta diversity among 466 floristic sites that spanned the savanna and succulent biomes in eastern South America. Explanatory variables were selected using variance inflation factors, information criteria, and the ability to explain both species and phylogenetic beta diversity. A model involving annual precipitation suggests that a threshold of <. 1200. mm explains community phylogenetic structure along the savanna-succulent biome transition. Variables involving temperatures or measures of seasonality were notably lacking from top-ranked models. The abundance and diversity of legumes across the tropical seasonality gradient suggest that a high nitrogen metabolism confers an advantage in one of two ways, both of which are related to rapid growth rates. Legumes adapted to the succulent biome may be responding to regular post-dry-season leaf-flush opportunities. Legumes adapted to the savanna biome may be responding to intermittent post-disturbance growing opportunities. A seasonal predominance of leaf flushing by woody plants implicates the role of ecological stability in the succulent biome because of the need to recover the cost of regenerating short-lived leaves. Ecological stability may be the fundamental cause of ecological phylogenetic structure across the tropical seasonality gradient and required for maintaining high levels of both leaf-flushing legume and succulent plant biodiversity. © 2013 South African Association of Botanists.

Leguminosae; Mean-nearest-taxon distances; Phylogenetic beta diversity; Phylogenetic community ecology; Savanna; Seasonally dry tropical forests; Succulent biome

South America; Fabaceae; biome; community ecology; growth rate; legume; niche overlap; paleobotany; phylogenetics; phylogeny; savanna; seasonality; species diversity; tropical forest; woody plant

M. Lavin; Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, United States; email: mlavin@montana.edu

All Open Access; Hybrid Gold Open Access

2-s2.0-84887821165

Sedorko D.; Spiekermann R.; Silva R.C.D.; Cabral Ramos R.R.; Mello C.L.; Manfroi J.; Sucerquia P.A.; Gomes B.L.; Jasper A.

Sedorko, Daniel (55431229500); Spiekermann, Rafael (56925270700); Silva, Rafael Costa da (26421983200); Cabral Ramos, Renato Rodriguez (57324415300); Mello, Claudio Limeira (7005061537); Manfroi, Joseline (55353315300); Sucerquia, Paula Andrea (55185227800); Gomes, Bruno Lopes (59228113700); Jasper, André (7003460953)

55431229500; 56925270700; 26421983200; 57324415300; 7005061537; 55353315300; 55185227800; 59228113700; 7003460953

Paleoclimatic implications of a vascular plant from the lowermost Itararé Group

Journal of South American Earth Sciences

10.1016/j.jsames.2024.105045

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199205528&doi=10.1016%2fj.jsames.2024.105045&partnerID=40&md5=59ff124e06315228a7e7f3dcb3f520d9

Museu Nacional, Departamento de Geologia e Paleontologia, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari (PPGAD/UNIVATES), Rio Grande do Sul, Lajeado, Brazil; Serviço Geológico do Brasil, Museu de Ciências da Terra, Av. Pasteur, 404, Urca, RJ, Rio de Janeiro, 22290240, Brazil; Instituto de Geociências, Universidade Federal do Rio de Janeiro, RJ, Rio de Janeiro, Brazil; CIAHN-Atacama, Corporación para la Investigación y Avance de la Paleontología e Historia Natural de Atacama. Caldera, Atacama, Chile; Laboratório de Paleobotânica e Evolução Vegetal, Universidade Federal de Pernambuco, Brazil

Sedorko D., Museu Nacional, Departamento de Geologia e Paleontologia, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Spiekermann R., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari (PPGAD/UNIVATES), Rio Grande do Sul, Lajeado, Brazil; Silva R.C.D., Serviço Geológico do Brasil, Museu de Ciências da Terra, Av. Pasteur, 404, Urca, RJ, Rio de Janeiro, 22290240, Brazil; Cabral Ramos R.R., Museu Nacional, Departamento de Geologia e Paleontologia, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Mello C.L., Instituto de Geociências, Universidade Federal do Rio de Janeiro, RJ, Rio de Janeiro, Brazil; Manfroi J., CIAHN-Atacama, Corporación para la Investigación y Avance de la Paleontología e Historia Natural de Atacama. Caldera, Atacama, Chile; Sucerquia P.A., Laboratório de Paleobotânica e Evolução Vegetal, Universidade Federal de Pernambuco, Brazil; Gomes B.L., Instituto de Geociências, Universidade Federal do Rio de Janeiro, RJ, Rio de Janeiro, Brazil; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari (PPGAD/UNIVATES), Rio Grande do Sul, Lajeado, Brazil

Plant fossils serve as critical proxies for interpreting past climates and environments, offering insights into the history of biosphere and climatic conditions. Here we describe a large tracheophyte cast, as well as the sedimentological settings in which it is preserved, expanding the paleobotanical database of the Itararé Group and contributing to the understanding of the LPIA in the Paraná Basin. This fossil occurs in Ponta Grossa, Paraná state, Brazil, within sedimentary levels interpreted as glacially dominated and deposited during the Late Paleozoic Ice Age (LPIA). The plant macrofossil is preserved as a cast, and the log is vertically oriented with a slight inclination in relation to the bedding plane. Taphonomic data indicate an allochthonous preservation, suggesting that the log was transported from inland areas to a plain before final burial. The identification of the tracheophyte cast within these glacial beds suggests that even in a dominantly glacial context, there were periods of episodic climatic amelioration. This finding implies that the climatic conditions during the Mississippian were not uniformly harsh, allowing the growth of vegetation as represented by the reported tracheophyta. © 2024 Elsevier Ltd

Carboniferous; Interglacial; Mississippian; Paraná basin; Tracheophyta

D. Sedorko; Museu Nacional, Departamento de Geologia e Paleontologia, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; email: sedorko@mn.ufrj.br

J. South Am. Earth Sci.

2-s2.0-85199205528

Stevanato M.; Rasbold G.G.; Parolin M.; Domingos Luz L.; Lo E.; Weber P.; Trevisan R.; Galeazzi Caxambu M.

Stevanato, Mayra (57207915458); Rasbold, Giliane Gessica (57209767434); Parolin, Mauro (36490355900); Domingos Luz, Leandro (57207916286); Lo, Edward (57199211779); Weber, Philipy (56288000300); Trevisan, Rafael (56265852800); Galeazzi Caxambu, Marcelo (57207909070)

57207915458; 57209767434; 36490355900; 57207916286; 57199211779; 56288000300; 56265852800; 57207909070

New characteristics of the papillae phytolith morphotype recovered from eleven genera of cyperaceae

Flora: Morphology, Distribution, Functional Ecology of Plants

10.1016/j.flora.2019.03.012

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063233707&doi=10.1016%2fj.flora.2019.03.012&partnerID=40&md5=820bfd1b3253baec4599fdff421544e4

Graduate Program in Geography, State University of Maringá, Maringá, PR, Brazil; Graduate Program in Ecology of Inland Water Ecosystems, State University of Maringá, PR, Brazil; Department of Geography, State University of Paraná, Campo Mourão, PR, Brazil; Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY, United States; Graduate Program in Botanic, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Department of Botanic, Federal University of Santa Catarina, Florianópolis, SC, Brazil; Department of Environmental Engineering, Federal University of Technology - Paraná, Campo Mourão, PR, Brazil

Stevanato M., Graduate Program in Geography, State University of Maringá, Maringá, PR, Brazil; Rasbold G.G., Graduate Program in Ecology of Inland Water Ecosystems, State University of Maringá, PR, Brazil; Parolin M., Department of Geography, State University of Paraná, Campo Mourão, PR, Brazil; Domingos Luz L., Graduate Program in Geography, State University of Maringá, Maringá, PR, Brazil; Lo E., Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY, United States; Weber P., Graduate Program in Botanic, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; Trevisan R., Department of Botanic, Federal University of Santa Catarina, Florianópolis, SC, Brazil; Galeazzi Caxambu M., Department of Environmental Engineering, Federal University of Technology - Paraná, Campo Mourão, PR, Brazil

Cyperaceae plants are significant indicators for wet environments in paleoenvironmental studies. The characterization of modern phytoliths in Cyperaceae plants is fundamental for the identification and the taxonomic correlation with the morphologies preserved in sediments. This study proposes to expand the characterization and quantification of Cyperaceae phytoliths, including variations in ornamentation (smooth and spiny), base shape (oblong, square, and hexagonal), and apex format (rounded and pointed). For the study, we collected 11 species of 11 genera of Cyperaceae, separated 3 g of leaves, and extracted the phytoliths using acid dissolution. We observed four main morphotypes in the specimens: papillae, elongate psilate, elongate echinate, and cylindric sulcate tracheid. The papillae morphotype was predominant in all species, with an occurrence of >90%. Our study adds new insights towards classifying patterns in the dimensions and forms of Cyperaceae phytoliths. © 2019 Elsevier GmbH

Cyperaceae; Modern phytoliths; Papillae; Phytolith classification

Cyperaceae; acid digestion; fossil record; identification method; leaf morphology; morphotype; paleobotany; phytolith; quantitative analysis; shape analysis; taxonomy

M. Stevanato; Graduate Program in Geography, State University of Maringá, Jardim Universitário, Maringá, Block H-12, Room 18, 5790, Colombo Avenue, 87020-900, Brazil; email: mayrastevanato@gmail.com

Flora Morphol. Distrib. Funct. Ecol. Plants.

2-s2.0-85063233707

Pessoa E.M.; Ribeiro A.C.; Christenhusz M.J.M.; Coan A.I.; Jud N.A.

Pessoa, Edlley M. (51061250700); Ribeiro, Alexandre C. (14014005500); Christenhusz, Maarten J. M. (6507266662); Coan, Alessandra Ike (8051141500); Jud, Nathan A. (23985404200)

51061250700; 14014005500; 6507266662; 8051141500; 23985404200

Is Santaniella a ranunculid? Reassessment of this enigmatic fossil angiosperm from the Lower Cretaceous (Aptian, Crato Konservat-Lagerstätte, Brazil) provides a new interpretation

American Journal of Botany

10.1002/ajb2.16163

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85158086141&doi=10.1002%2fajb2.16163&partnerID=40&md5=320432f95fe1047ec69c782e48a597b1

Laboratório de Estudos Integrados de Plantas, Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Mato Grosso, Cuiabá, Brazil; Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Mato Grosso, Cuiabá, Brazil; Department of Environment and Agriculture, Curtin University, Perth, Western Australia, Australia; Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom; Departamento de Biodiversidade, Universidade Estadual Paulista “Júlio de Mesquita Filho,” Instituto de Biociências, São Paulo, Rio Claro, Brazil; Department of Biology, William Jewell College, Liberty, MO, United States

Pessoa E.M., Laboratório de Estudos Integrados de Plantas, Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Mato Grosso, Cuiabá, Brazil; Ribeiro A.C., Departamento de Biologia e Zoologia, Universidade Federal de Mato Grosso, Mato Grosso, Cuiabá, Brazil; Christenhusz M.J.M., Department of Environment and Agriculture, Curtin University, Perth, Western Australia, Australia; Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom; Coan A.I., Departamento de Biodiversidade, Universidade Estadual Paulista “Júlio de Mesquita Filho,” Instituto de Biociências, São Paulo, Rio Claro, Brazil; Jud N.A., Department of Biology, William Jewell College, Liberty, MO, United States

Premise: The Lower Cretaceous Crato Konservat-Lagerstätte (CKL) preserves a rich flora that includes early angiosperms from northern Gondwana. From this area, the recently described fossil genus Santaniella was interpreted as a ranunculid (presumably Ranunculaceae). However, based on our examination of an additional specimen and a new phylogenetic analysis, we offer an alternative interpretation. Methods: The new fossil was collected from an active quarry for paving stones in the state of Ceará, northeastern Brazil. We assessed support for alternative phylogenetic hypotheses using a combined analysis of morphological data and DNA sequence data using Bayesian inference. We used a consensus network to visualize the posterior distribution of trees, and we used RoguePlot to illustrate the support for alternative positions on a scaffold tree. Results: The new material includes a flower-like structure not present in the original material and also includes follicles preserved at early stages of development. The flower-like structure is a compact terminal cluster of elliptical sterile laminar organs surrounding internal filamentous structures that occur on flexuous axes. Phylogenetic analyses did not support the fossil placement among eudicots. Instead, Santaniella appears to belong in the magnoliid clade. Conclusions: The presence of seeds in a marginal-linear placentation and enclosed in a follicle supports the fossil as an angiosperm. However, even though most characters are clearly recognizable, its combination of characters does not provide strong support for a close relationship to any extant order of flowering plants. Its position in the magnoliid clade is intriguing and, based on plicate carpels, it is definitely a mesangiosperm. © 2023 Botanical Society of America.

angiosperm; Cretaceous; Gondwana; macrofossil; paleobotany; South America

Bayes Theorem; Brazil; Fossils; Magnoliopsida; Phylogeny; Brazil; angiosperm; Cretaceous; fossil record; geographical distribution; Gondwana; morphology; paleobotany; phylogenetics; angiosperm; Bayes theorem; Brazil; fossil; phylogeny

E.M. Pessoa; Laboratório de Estudos Integrados de Plantas, Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil; email: edlley_max@hotmail.com

John Wiley and Sons Inc

2-s2.0-85158086141

Friaes Y.S.; Feijó Ramos M.I.; Linhares A.P.

Friaes, Yuri Souza (55433723700); Feijó Ramos, Maria I. (7203081909); Linhares, Ana Paula (51665400000)

55433723700; 7203081909; 51665400000

New paleoenvironmental and palynostratigraphic data from Solimões Formation (Solimões Basin, Amazonas, Brazil)

Journal of South American Earth Sciences

10.1016/j.jsames.2022.103751

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126152238&doi=10.1016%2fj.jsames.2022.103751&partnerID=40&md5=4de6a4bb3e6f2dafe391d08990388958

Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral 1901, Pará, Belém, CEP 66077-830, Brazil; Programa de Capacitação Institucional, Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral, 1901, Pará, Belém, CEP 66077-830, Brazil

Friaes Y.S., Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral 1901, Pará, Belém, CEP 66077-830, Brazil, Programa de Capacitação Institucional, Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral, 1901, Pará, Belém, CEP 66077-830, Brazil; Feijó Ramos M.I., Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral 1901, Pará, Belém, CEP 66077-830, Brazil; Linhares A.P., Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Av. Perimetral 1901, Pará, Belém, CEP 66077-830, Brazil

The Western Amazon was affected by tectonic events of great impacts, such as the uplift of the Andes during the Neogene. Such events promoted significant changes in the fluvial drainage system, in the climate, as well as in the ecosystems, triggering great irradiation of the Amazonian biota. Marine evidence recorded in the region also influenced the radiation of the biota. Despite advances in the paleoenvironmental and age models proposed for the Western Amazon deposits, we still observe conflicting results and interpretations on these aspects. Thus, here were analyzed the palynological content of three cores aimed to contribute with new paleoenvironmental and biostratigraphic data of the Solimões Formation. We presented new paleobotanical data from the 1AS-5-AM, 1AS-7D-AM, and 1AS-8-AM cores and correlated the biostratigraphic data already published with the data obtained here; were recognized five palynozones (Verrutricolporites, Psiladiporites, Crassoretitriletes, Grimsdalea, and Asteraceae), reaching a range from the early to the late Miocene. The vegetation throughout the sequences studied includes elements of dryland forest next to zones of wetlands vegetation, including flooded forests and swamps; the floristic composition changed over time, predominating flooding vegetation during the early and part of the middle Miocene. © 2022 Elsevier Ltd

Biozonation; Neogene; Paleoenvironments; Palynology; Western Amazon

Amazonas [Brazil]; Brazil; Solimoes Basin; age determination; biostratigraphy; biozonation; geological record; paleoenvironment; palynology; tectonic evolution; uplift

Y.S. Friaes; Museu Paraense Emílio Goeldi, Coordenação de Ciências da Terra e Ecologia, Belém, Av. Perimetral 1901, Pará, CEP 66077-830, Brazil; email: yurifriaes@museu-goeldi.br

J. South Am. Earth Sci.

2-s2.0-85126152238

Ahmad F.; Tahoun S.S.; Makhlouf I.; Al-Kahtany K.; Ibrahim M.; Zaky A.S.

Ahmad, Fayez (7101861884); Tahoun, Sameh S. (55906382000); Makhlouf, Issa (6506984238); Al-Kahtany, Khaled (55330613200); Ibrahim, Mohamed (57203520010); Zaky, Amr S. (56950320800)

7101861884; 55906382000; 6506984238; 55330613200; 57203520010; 56950320800

Triassic sporomorph data for the Umm Irna Formation: Age constraints from the northwestern part of Jordan

Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen

ESP155031003004

10.1127/njgpa/2023/1181

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85190098088&doi=10.1127%2fnjgpa%2f2023%2f1181&partnerID=40&md5=5724a45dbad7f4e82016cd09cf5ea658

Department of Earth and Environmental Sciences, Prince El-Hassan Bin Talal Faculty for Natural Resources and Environment, The Hashemite University, Zarqa, Jordan; Department of Geology, Faculty of Science, Cairo University, Giza, 12613, Egypt; Geology and Geophysics Department, College of Science, King Saud University, Riyadh, Saudi Arabia; Department of Environmental Sciences, Faculty of Science, Alexandria University, Egypt; Geology Department, Faculty of Science, Menoufia University, Shebin El-Kom, 32511, Egypt; Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, 05508-120, Brazil

Ahmad F., Department of Earth and Environmental Sciences, Prince El-Hassan Bin Talal Faculty for Natural Resources and Environment, The Hashemite University, Zarqa, Jordan; Tahoun S.S., Department of Geology, Faculty of Science, Cairo University, Giza, 12613, Egypt; Makhlouf I., Department of Earth and Environmental Sciences, Prince El-Hassan Bin Talal Faculty for Natural Resources and Environment, The Hashemite University, Zarqa, Jordan; Al-Kahtany K., Geology and Geophysics Department, College of Science, King Saud University, Riyadh, Saudi Arabia; Ibrahim M., Department of Environmental Sciences, Faculty of Science, Alexandria University, Egypt; Zaky A.S., Geology Department, Faculty of Science, Menoufia University, Shebin El-Kom, 32511, Egypt, Instituto Oceanográfico da Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, 05508-120, Brazil

The Umm Irna Formation, covering a large area in Jordan, shows lithological variations from one area to another. The previous palynological works assigned a Permian age to this rock unit. The current palynological analysis was achieved on twenty samples taken from the claystone and shale interbeds of the Umm Irna Formation. Most of the selected samples were barren. Some longranging taxa with high thermal maturity were recorded. In addition, a black to brownish Triassic sporomorph assemblage was extracted in the present study from a few productive samples from the coarse-clastic dominated Umm Irna section exposed in the northwestern part of Jordan. A poorly diverse assemblage, including 39 sporomorph species, was identified. This contribution gives palynological evidence of the Triassic age for the Umm Irna Formation, based on the qualitative and quantitative control of the marker taxa Endosporites papillatus, Alisporites magnus, Falcisporites stabilis, Cyclotriletes microgranifer, and Cycadopites follicularis. The plant affinity of the recovered sporomorph taxa was noted. For better correlation across the Tethyan Realm, the stratigraphic distribution ranges of some selected diagnostic palynomorph species in Jordan and other Tethyan sites were compared. The current assemblage represents significant sporomorph data for the Umm Irna Formation and proves its age to be not older than the Triassic. © 2024 E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany.

Northwestern Jordan; palynology; Triassic; Umm Irna Formation

Jordan; claystone; fossil assemblage; paleobotany; palynology; shale; spore; thermal maturity; Triassic

F. Ahmad; Department of Earth and Environmental Sciences, Prince El-Hassan Bin Talal Faculty for Natural Resources and Environment, The Hashemite University, Zarqa, Jordan; email: fayezahmad3@hotmail.com

Schweizerbart Science Publishers

Neues Jahrb. Geol. Palaontol. Abh.

2-s2.0-85190098088

Segnini A.; De Souza A.; Novotny E.H.; Milori D.M.B.P.; Da Silva W.T.L.; Bonagamba T.J.; Posadas A.; Quiroz R.

Segnini, Aline (23969270100); De Souza, Andréalves (33267454800); Novotny, Etelvino Henrique (7004406255); Milori, Débora Marcondes Bastos Pereira (6603420382); Da Silva, Wilson Tadeu Lopes (7007013237); Bonagamba, Tito José (7003420478); Posadas, Adolfo (7004306593); Quiroz, Roberto (7003695017)

23969270100; 33267454800; 7004406255; 6603420382; 7007013237; 7003420478; 7004306593; 7003695017

Characterization of peatland soils from the high andes through 13C nuclear magnetic resonance spectroscopy wetland soils

Soil Science Society of America Journal

10.2136/sssaj2012.0291

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877258522&doi=10.2136%2fsssaj2012.0291&partnerID=40&md5=3cd7f4a8b095d267d377838a71f82f32

Brazilian Agric. Research Corp., (Embrapa)- Instrumentation Center, 13560-970 São Carlos-SP, Rua XV de Novembro, 1452, Brazil; Instituto de Física de São Carlos, Universidade de São Paulo, 1360-970 São Carlos-SP, Caixa Postal 369, Brazil; Brazilian Agric. Research Corp., (Embrapa)- Soils Center, 22460-000 Rio de Janeiro-RJ, Rua Jardim Botânico, 1024, Brazil; International Potato Center, Lima 12, Av. la Molina, 1895, Peru

Segnini A., Brazilian Agric. Research Corp., (Embrapa)- Instrumentation Center, 13560-970 São Carlos-SP, Rua XV de Novembro, 1452, Brazil; De Souza A., Instituto de Física de São Carlos, Universidade de São Paulo, 1360-970 São Carlos-SP, Caixa Postal 369, Brazil; Novotny E.H., Brazilian Agric. Research Corp., (Embrapa)- Soils Center, 22460-000 Rio de Janeiro-RJ, Rua Jardim Botânico, 1024, Brazil; Milori D.M.B.P., Brazilian Agric. Research Corp., (Embrapa)- Instrumentation Center, 13560-970 São Carlos-SP, Rua XV de Novembro, 1452, Brazil; Da Silva W.T.L., Brazilian Agric. Research Corp., (Embrapa)- Instrumentation Center, 13560-970 São Carlos-SP, Rua XV de Novembro, 1452, Brazil; Bonagamba T.J., Instituto de Física de São Carlos, Universidade de São Paulo, 1360-970 São Carlos-SP, Caixa Postal 369, Brazil; Posadas A., International Potato Center, Lima 12, Av. la Molina, 1895, Peru; Quiroz R., International Potato Center, Lima 12, Av. la Molina, 1895, Peru

Whole soil samples from Peruvian bofedales (highland peatlands), located at an average altitude of 3881 m above sea level, were analyzed through 13C solid-state nuclear magnetic resonance (13C SSNMR) spectroscopy. The objective was to make a semi-quantitative characterization of the predominant organic chemical structures and to compare the organic matter from permanently and seasonally flooded peatlands soils as well as to characterize the changes throughout the soil profile using principal component analysis (PCA) of 13C-SSNMR spectra. Results indicated a relative accumulation of recalcitrant organic compounds as a function of depth that could be due to the constant input of fresh material to the soil surface. Notwithstanding, the results were different for each soil type. In seasonally flooded bofedales, the accumulated recalcitrant material was mainly composed of carboxylated aromatic moieties, whereas in permanently flooded bofedales, the accumulated material presented crystalline polymethylene, being the main difference the anoxic condition of permanently waterlogged soils. On the other hand, the degradable (labile) material was similar in both soils (i.e., mainly cellulose and partially oxidized cellulose). Another interesting feature was that the results seem to corroborate paleobotanical findings, pointing out to an ancient dominance of C4 taxa in Andean grasslands (deep layers in bofedales samples) whose lignin had more coumaryl alcohol at the expense of guaiacyl and syringyl units. Copyright © 2013 by the Soil Science Society of America, Inc.

Andes; Peru; Cellulose; Floods; Nuclear magnetic resonance spectroscopy; Organic chemicals; Organic compounds; Principal component analysis; Wetlands; Anoxic conditions; Aromatic moieties; Oxidized cellulose; Paleobotanical; Solid-state nuclear magnetic resonance; Syringyl units; Waterlogged soils; Wetland soils; alcohol; anoxic conditions; carbon isotope; dominance; ethylene; geoaccumulation; grassland; land surface; lignin; nuclear magnetic resonance; paleobotany; peatland; soil conservation; soil degradation; soil depth; soil organic matter; soil type; spectroscopy; taxonomy; wetland; Soils

A. Segnini; Brazilian Agric. Research Corp., (Embrapa)- Instrumentation Center, 13560-970 São Carlos-SP, Rua XV de Novembro, 1452, Brazil; email: alinesegnini@hotmail.com

Soil Sci. Soc. Am. J.

2-s2.0-84877258522

Degani-Schmidt I.; Guerra-Sommer M.; Freitas T.

Degani-Schmidt, Isabela (55331051000); Guerra-Sommer, Margot (6602534370); Freitas, Taís (16444375900)

55331051000; 6602534370; 16444375900

Preserved cytoplasm in charred Agathoxylon-type wood from the permian of Brazilian ParanÁ basin

Revista Brasileira de Paleontologia

10.4072/RBP.2018.2.02

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065234772&doi=10.4072%2fRBP.2018.2.02&partnerID=40&md5=7b112c347a601ad11cc409d65f4173d8

Instituto de Geociências, UFRGS, Cx.P. 15001, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil

Degani-Schmidt I., Instituto de Geociências, UFRGS, Cx.P. 15001, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil; Guerra-Sommer M., Instituto de Geociências, UFRGS, Cx.P. 15001, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil; Freitas T., Instituto de Geociências, UFRGS, Cx.P. 15001, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil

The present study documents cytoplasm preserved by charring in parenchymatous cells of the wood rays of secondary xylem tissue in Agathoxylon-type wood from the Permian of the Brazilian Paraná Basin. Charred logs and bark fragments were collected from the upper coal seam of Sakmarian age (U–Pb dating 291±1.3 Ma) in the Faxinal Coalfield, Rio Grande do Sul, Brazil (Rio Bonito Formation, southern Paraná Basin). The material was examined under field emission gun – scanning electron microscopy. Results of energy dispersive spectroscopy are compatible with organic matter. Three types of cell contents preserved in parenchymatous tissue were observed in the charred samples: solidified, hydrolyzed and agglutinated. Lightning strikes are hypothesized as the likely fossilizing agent for plant cytoplasm, acting as killer and fixer and thus preventing the natural decay that ensues from plant death in the natural environment. The persistence of charcoalified plant tissues has been frequently documented since Paleozoic times, whereas preservation of cytoplasm is less common in wildfire settings since it likely involves a particular interaction of paleobotanic, cytological, physiological, taphonomic and paleoenvironmental factors. Nevertheless, preserved cytoplasm is probably ubiquitous in the fossil record and underreported. © 2018, Sociedade Brasileira de Paleontologia. All rights reserved.

Charcoal; Gondwana; Late Paleozoic; Paleowildfires

Sociedade Brasileira de Paleontologia

Rev. Bras. Paleontol.

All Open Access; Bronze Open Access

2-s2.0-85065234772

Chopparapu C.; Annamraju R.; Kavali P.S.; Duarte S.G.

Chopparapu, Chinnappa (57200271740); Annamraju, Rajanikanth (56480646200); Kavali, Pauline Sabina (56275793400); Duarte, Sarah Gonçalves (36628052500)

57200271740; 56480646200; 56275793400; 36628052500

Angiosperms from the Early Cretaceous sediments of India; [Angiospermas de sedimentos do Cretáceo inicial da Índia]

Geologia USP - Serie Cientifica

10.11606/issn.2316-9095.v20-171976

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108531908&doi=10.11606%2fissn.2316-9095.v20-171976&partnerID=40&md5=1365c61ddfaa43899c96081d0af47604

Andhra Loyola College, Department of Botany, Andhra Pradesh, Vijayawad, 52008, India; Ushodaya Apartments, Hyderabad, Tarnaka, India; Birbal Sahni Institute of Palaeosciences, Uttar Pradesh, Lucknow, India; Universidade Federal Rural Do Rio de Janeiro, Agronomy Institute, Soil Departament, Seropedica, RJ, Brazil

Chopparapu C., Andhra Loyola College, Department of Botany, Andhra Pradesh, Vijayawad, 52008, India; Annamraju R., Ushodaya Apartments, Hyderabad, Tarnaka, India; Kavali P.S., Birbal Sahni Institute of Palaeosciences, Uttar Pradesh, Lucknow, India; Duarte S.G., Universidade Federal Rural Do Rio de Janeiro, Agronomy Institute, Soil Departament, Seropedica, RJ, Brazil

This study presents the first report of angiosperm macrofossil assemblage from the Early Cretaceous sediments of India, containing a fruit, a spike, a petal, leaves, and an axis from the Krishna Godavari Basin. This assemblage provides clues to angiosperm evolution and ecology during the Early Cretaceous of India. The described enigmatic forms are comparable to fruits of Trapa, and palm leaves and spikes of Potamogeton. The fossil material also includes ribbon-like leaves with a small axis; fossil remains suggest affinity with the monocotyledon group and support recent morphological and molecular phylogenetic studies to establish the divergence of this group from dicotyledons, during the early Cretaceous. Fossils described in the present study suggest an affinity for an aquatic environment that appears to be ideal for some early angiosperms. © 2020 Universidade de Sao Paulo. All rights reserved.

Angiosperms; Early Cretaceous; Evolution; India

India; Dicotyledoneae; Elliptio dilatata; Liliopsida; Magnoliophyta; Potamogeton; angiosperm; Cretaceous; evolution; fossil assemblage; fossil record; new record; paleobiogeography; paleobotany; phylogenetics

Geol. USP Ser. Cient.

All Open Access; Gold Open Access

2-s2.0-85108531908

Matsumura W.M.K.; Iannuzzi R.; Bosetti E.P.

Matsumura, Willian Mikio Kurita (54796862900); Iannuzzi, Roberto (6603970107); Bosetti, Elvio Pinto (35772349700)

54796862900; 6603970107; 35772349700

Middle Devonian herbaceous lycopsid Haplostigma from the Paraná Basin, Brazil: Taxonomy, biostratigraphy and Phytogeography

10.1016/j.geobios.2015.07.001

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945270535&doi=10.1016%2fj.geobios.2015.07.001&partnerID=40&md5=9f288b64e5e49d57c55b0124ecf0b815

Universidade Federal do Rio Grande do Sul, Instituto de Geociências UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, RS 91509-900, Brazil; Universidade Estadual de Ponta Grossa, Departamento de Geociências, UEPG, Av. Carlos Cavalcanti 4748, Ponta Grossa, PR 84030-900, Brazil

Matsumura W.M.K., Universidade Federal do Rio Grande do Sul, Instituto de Geociências UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, RS 91509-900, Brazil; Iannuzzi R., Universidade Federal do Rio Grande do Sul, Instituto de Geociências UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, RS 91509-900, Brazil; Bosetti E.P., Universidade Estadual de Ponta Grossa, Departamento de Geociências, UEPG, Av. Carlos Cavalcanti 4748, Ponta Grossa, PR 84030-900, Brazil

Most paleobotanical records from the Middle Devonian consist of stems of herbaceous lycopsids. This group of vascular plants has a fossil record longer than any other group, extending from possibly the Late Silurian to the present day. Newly collected fossil material including lycopsid stems found in the Middle Devonian of the Paraná Basin were analyzed and assigned to the morphogenus Haplostigma and, more specifically, to H. irregularis, H. furquei, H. baldisii, and H. cf. kowiensis. Morphometric analysis based on characters measured on stem supports the taxonomic separation. This represents the highest diversity of this genus reported so far in this and other Gondwanan basins. The stratigraphic record and paleophytogeographic distribution of Haplostigma species in all Devonian deposits were analyzed. Available data indicate that Haplostigma is composed of small to medium-sized, fast-growing herbaceous lycopsids, which were apparently very successful and well adapted to the cool-temperate high-latitude climates during the Middle to Late Devonian. © 2015 Elsevier Masson SAS.

Haplostigma; Middle Devonian; Paleophytogeography; Paraná Basin; Stratigraphic range; São Domingos Formation

Parana Basin; Lycopodiopsida; Tracheophyta; biostratigraphy; Devonian; fossil record; herb; paleobotany; phytogeography; Silurian; taxonomy; vascular plant

W.M.K. Matsumura; Universidade Federal do Rio Grande do Sul, Instituto de Geociências UFRGS, Porto Alegre, Av. Bento Gonçalves, 9500, RS 91509-900, Brazil; email: williammatsumura@gmail.com

Elsevier Masson s.r.l.

2-s2.0-84945270535

Trajano A.D.S.; Marques-de-Souza J.; Iannuzzi R.; Celestino Holanda E.

Trajano, Adriana de Souza (58542724100); Marques-de-Souza, Juliane (57190680684); Iannuzzi, Roberto (6603970107); Celestino Holanda, Elizete (36992268900)

58542724100; 57190680684; 6603970107; 36992268900

Ephedra-like Cones from Serra do Tucano formation (Lower Cretaceous), Takutu Basin, Roraima

Journal of South American Earth Sciences

10.1016/j.jsames.2023.104659

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175082068&doi=10.1016%2fj.jsames.2023.104659&partnerID=40&md5=64b07b731ae4d7213d32f5b5a7c4df28

Universidade Federal do Ceará, Programa de Pós-Graduação em Geologia, Centro de Ciências, Av. Humberto Monte, S/n Campus Do Pici, CE, Fortaleza, 60455-760, Brazil; Universidade Estadual de Roraima, Rua 7 de Setembro, 231, Campus Canarinho, RR, Boa Vista, 69306-530, Brazil; Universidade Federal do Rio Grande do Sul, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Av. Bento Gonçalves, 9500, RS, Porto Alegre, 91501-970, Brazil; Universidade Federal de Roraima, Laboratório de Paleontologia da Amazônia, Departamento de Geologia, Instituto de Geociências, Av. Capitão Ene Garcez, 241, Aeroporto, Roraima, Boa Vista, 69.310-000, Brazil

Trajano A.D.S., Universidade Federal do Ceará, Programa de Pós-Graduação em Geologia, Centro de Ciências, Av. Humberto Monte, S/n Campus Do Pici, CE, Fortaleza, 60455-760, Brazil; Marques-de-Souza J., Universidade Estadual de Roraima, Rua 7 de Setembro, 231, Campus Canarinho, RR, Boa Vista, 69306-530, Brazil; Iannuzzi R., Universidade Federal do Rio Grande do Sul, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Av. Bento Gonçalves, 9500, RS, Porto Alegre, 91501-970, Brazil; Celestino Holanda E., Universidade Federal de Roraima, Laboratório de Paleontologia da Amazônia, Departamento de Geologia, Instituto de Geociências, Av. Capitão Ene Garcez, 241, Aeroporto, Roraima, Boa Vista, 69.310-000, Brazil

The fossilized parts of several plants are described from the Lower Cretaceous of the Serra do Tucano Formation, Brazil. These include ovulate cones with whorls/decussate bracts involving one terminal female reproductive unit sometimes attached to an incomplete shoot with striated axes and nodes with unequivocal ephedroid affinity. A new genus, Paraephedra, is proposed to accommodate three different ovulate structures. Paraephedra amazonensis is interpreted as a terminally attached single ovule/seed surrounded by whorls/decussate bracts that cover the ovule almost completely. Paraephedra sp. 1 is interpreted as a single ovoid to elongate-ovoid ovule/seed surrounded by one to two connate bracts extending to just below the middle of the ovule. Paraephedra sp. 2 is interpreted as a terminally attached single ovule/seed surrounded by one to two pairs of decussate bracts that cover the ovule almost completely. Although the general morphology of Paraephedra bears a strong resemblance to Ephedra L., the expected micropylar tube is missing (or has not been confirmed), thus preventing its classification in the Ephedrales/Ephedraceae. The association of these Ephedra-like reproductive structures with other taxa previously recognized from the Serra do Tucano Formation support the hypothesis that the Takutu Basin region was under an arid/semi-arid climate regime during the Barremian–Albian interval. © 2023 Elsevier Ltd

Ephedroid female cones; Lower Cretaceous; Northern Brazil; Takutu basin

Brazil; Roraima; Cretaceous; fossil; gymnosperm; morphology; new genus; paleobotany; reproductive status

A.D.S. Trajano; Universidade Federal do Ceará, Programa de Pós-Graduação em Geologia, Centro de Ciências, Fortaleza, Av. Humberto Monte, S/n Campus Do Pici, CE, 60455-760, Brazil; email: adriana.trajano.rr@gmail.com

J. South Am. Earth Sci.

2-s2.0-85175082068

Batista M.E.P.; Martine A.M.; Saraiva A.Á.F.; Lima F.J.D.; Barros O.A.; Sá A.A.A.; Loiola M.I.B.

Batista, Maria Edenilce Peixoto (57193515474); Martine, Ariel Milani (57190664797); Saraiva, Antônio Álamo F. (29567569800); Lima, Flaviana Jorge de (56481285700); Barros, Olga Alcântara (55894645500); Sá, Artur A.A. (6701717915); Loiola, Maria Iracema Bezerra (21741498900)

57193515474; 57190664797; 29567569800; 56481285700; 55894645500; 6701717915; 21741498900

Brachyphyllum: State of the art and new data regarding B. obesum, the most representative fossil plant in the Araripe Basin, Brazil

Journal of South American Earth Sciences

10.1016/j.jsames.2021.103405

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107678217&doi=10.1016%2fj.jsames.2021.103405&partnerID=40&md5=5a57c93827fe4c6e68041fe4bb313402

Programa de Pós-Graduação em Ecologia e Recursos Naturais, Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici – Bloco 906, Fortaleza, 60440-554, CE, Brazil; Departamento de Ciências Biológicas, Universidade Regional do Cariri, Coronel Antônio Luiz, 1161, Pimenta, Crato, 63105-000, CE, Brazil; Centro de Ciências Humanas e da Educação, Universidade Estadual do Norte do Paraná, Rua Padre Melo, 1200, Jacarezinho, 86400-000, Brazil; Laboratório de Paleontologia, Universidade Regional do Cariri, Carolino Sucupira, s/n, Pimenta, Crato, 63105-010, CE, Brazil; Programa de Pós-Graduação em Geologia, Universidade Federal do Ceará, Campus do Pici – Blocos 912/913, Fortaleza, 60440-554, CE, Brazil; Departamento de Geologia, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, Vila Real, 5000-801, Portugal; Centro de Geociências, Universidade de Coimbra-Polo II, Coimbra, 3030-790, Portugal; Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici – Bloco 906, Fortaleza, 60440-554, CE, Brazil

Batista M.E.P., Programa de Pós-Graduação em Ecologia e Recursos Naturais, Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici – Bloco 906, Fortaleza, 60440-554, CE, Brazil, Departamento de Ciências Biológicas, Universidade Regional do Cariri, Coronel Antônio Luiz, 1161, Pimenta, Crato, 63105-000, CE, Brazil; Martine A.M., Centro de Ciências Humanas e da Educação, Universidade Estadual do Norte do Paraná, Rua Padre Melo, 1200, Jacarezinho, 86400-000, Brazil; Saraiva A.Á.F., Departamento de Ciências Biológicas, Universidade Regional do Cariri, Coronel Antônio Luiz, 1161, Pimenta, Crato, 63105-000, CE, Brazil, Laboratório de Paleontologia, Universidade Regional do Cariri, Carolino Sucupira, s/n, Pimenta, Crato, 63105-010, CE, Brazil; Lima F.J.D., Laboratório de Paleontologia, Universidade Regional do Cariri, Carolino Sucupira, s/n, Pimenta, Crato, 63105-010, CE, Brazil; Barros O.A., Programa de Pós-Graduação em Geologia, Universidade Federal do Ceará, Campus do Pici – Blocos 912/913, Fortaleza, 60440-554, CE, Brazil; Sá A.A.A., Departamento de Geologia, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, Vila Real, 5000-801, Portugal, Centro de Geociências, Universidade de Coimbra-Polo II, Coimbra, 3030-790, Portugal; Loiola M.I.B., Programa de Pós-Graduação em Ecologia e Recursos Naturais, Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici – Bloco 906, Fortaleza, 60440-554, CE, Brazil, Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici – Bloco 906, Fortaleza, 60440-554, CE, Brazil

Among the rich paleobotanical record of the Araripe Basin, the coniferous fossil taxon Brachyphyllum stands out, found in the Crato, Romualdo, and possibly Ipubi formations. In these units, species Brachyphyllum obesum, Brachyphyllum castilhoi, and Brachyphyllum sattlerae are found, the first being the most common. However, there are still many gaps, especially regarding the paleoecology and parataxonomy of this fossil genus. This study aims to make a broad review of the current stage of knowledge of Brachyphyllum from the Araripe Basin, a very representative taxon of the local palaeoflora. We consider data available in the literature and morpho-anatomical analyses of new specimen using Scanning Electron Microscopy. The specimen analyzed in SEM has tracheids and features typical of Araucariaceae, like biseriate and alternating intervascular pits. However, there is variation in the number of pits per cross-field compared to other specimens. This variation may indicate greater diversity of fossil Brachyphyllum in the Araripe Basin. All species of Brachyphyllum from the Araripe Basin have xeromorphic characteristics, which can be adaptive responses to the conditions of aridity and/or salinity in the Crato and Romualdo formations. © 2021 Elsevier Ltd

Crato formation; Cretaceous; Fossil genus; Paleoecology; Romualdo formation; Santana group

Araripe Basin; Brazil; Araucariaceae; Brachyphyllum; Morpho; angiosperm; Cretaceous; fossil fuel; new genus; new species; paleobotany; paleoecology

M.E.P. Batista; Departamento de Ciências Biológicas, Universidade Regional do Cariri, Crato, Coronel Antônio Luiz, 1161, Pimenta, 63105-000, Brazil; email: edenilcebio@hotmail.com

J. South Am. Earth Sci.

All Open Access; Green Open Access

2-s2.0-85107678217

Carvalho M.R.; Herrera F.; Gómez S.; Martínez C.; Jaramillo C.

Carvalho, Mónica R. (55104427300); Herrera, Fabiany (24480882000); Gómez, Sebastián (57203885843); Martínez, Camila (55842452700); Jaramillo, Carlos (57207890757)

55104427300; 24480882000; 57203885843; 55842452700; 57207890757

Early records of melastomataceae from the middle-late Paleocene rain forests of south America conflict with Laurasian origins

International Journal of Plant Sciences

10.1086/714053

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103774599&doi=10.1086%2f714053&partnerID=40&md5=e55e320782bb6b3ee2c20f18ee620a07

Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama; Grupo de Investigación en Paleontología Neotropical Tradicional y Molecular (PaleoNeo), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia; Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL, United States; Instituto de Geociências, Universidade de São Paulo, São Paulo, Brazil; Institut Supérieur de L’Enterprise de Montpellier University of Montpellier, Centre National de la Recherche Scientifique École Pratique des Hautes Études, Institut de Recherche pour le Développement, Montpellier, France; Department of Geology, Faculty of Sciences, University of Salamanca, Salamanca, Spain

Carvalho M.R., Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama, Grupo de Investigación en Paleontología Neotropical Tradicional y Molecular (PaleoNeo), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia; Herrera F., Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama, Chicago Botanic Garden, 1000 Lake Cook Road, Glencoe, IL, United States; Gómez S., Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama, Instituto de Geociências, Universidade de São Paulo, São Paulo, Brazil; Martínez C., Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama; Jaramillo C., Smithsonian Tropical Research Institute, Box 0843-03092, Balboa, Ancón, Panama, Institut Supérieur de L’Enterprise de Montpellier University of Montpellier, Centre National de la Recherche Scientifique École Pratique des Hautes Études, Institut de Recherche pour le Développement, Montpellier, France, Department of Geology, Faculty of Sciences, University of Salamanca, Salamanca, Spain

Premise of research. Melastomataceae are a diverse and primarily tropical family with a particularly sparse fossil record. Various biogeographic interpretations based on phylogenies, extant distribution, and a limited fossil record have placed the origin of the family in either Laurasia or Gondwana (eastern or western). Methodology. We describe Xystonia simonae M. Carvalho gen. et sp. nov. on the basis of fossil leaves from middle-late Paleocene deposits of the Bogotá Formation in central Colombia. These leaves have a characteristic acrodromous venation pattern common among subfamily Melastomatoideae. The leaves are compared with various acrodromously veined fossils and living angiosperms to assess their natural affinities. Pivotal results. The fossil leaves described predate the earliest known occurrence of Melastomatoideae by 5-7 Myr and conflict with previous interpretations that considered Melastomatoideae as Laurasian in origin. In revising the fossil record of Melastomataceae, we reevaluated the age of Melastomaephyllum danielis Huert. to be Miocene (previously Eocene/Oligocene) using pollen obtained from the rock that contained the type specimen. Conclusions. Our findings contribute to the scant early records of Melastomataceae and show that Melastomatoideae was part of a tropical rain forest assemblage by the middle-late Paleocene. Leaf galls and other leaf damage on X. simonae evidence intense and specialized biotic interactions in the early evolution of this lineage. © 2021 by The University of Chicago. All rights reserved.

Bogotá Formation; Leaves; Melastomaceophyllum; Paleobotany; Xystonia

Colombia; Magnoliophyta; Melastomataceae; biogeographical region; biogeography; dicotyledon; evolution; fossil record; geographical distribution; Gondwana; Miocene; Paleocene; phylogeny; Pleistocene; rainforest

M.R. Carvalho; Smithsonian Tropical Research Institute, Ancón, Box 0843-03092, Balboa, Panama; email: carvalhom@si.edu

University of Chicago Press

2-s2.0-85103774599

Mohr B.A.R.; Coiffard C.; Bernardes-de-Oliveira M.E.C.

Mohr, Barbara A.R. (55194189300); Coiffard, Clément (6603741897); Bernardes-de-Oliveira, Mary E.C. (16634415400)

55194189300; 6603741897; 16634415400

Schenkeriphyllum glanduliferum, a new magnolialean angiosperm from the Early Cretaceous of Northern Gondwana and its relationships to fossil and modern Magnoliales

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2012.08.004

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84871823902&doi=10.1016%2fj.revpalbo.2012.08.004&partnerID=40&md5=4c089ab671af65411140402ea306c576

Museum für Naturkunde der Humboldt-Universität Berlin, Abteilung Sammlungen, D-10 115 Berlin, Invalidenstrasse 43, Germany; CEPPE - Post-Graduation and Research Centre of the University Guarulhos, 07023-070, Guarulhos (SP), Praça Tereza Cristina 1, Brazil; Institute of Geosciences, University of São Paulo, Cidade Universitária, 05508-080, Sao Paulo (SP), Rua do Lago 562, Brazil

Mohr B.A.R., Museum für Naturkunde der Humboldt-Universität Berlin, Abteilung Sammlungen, D-10 115 Berlin, Invalidenstrasse 43, Germany; Coiffard C., Museum für Naturkunde der Humboldt-Universität Berlin, Abteilung Sammlungen, D-10 115 Berlin, Invalidenstrasse 43, Germany; Bernardes-de-Oliveira M.E.C., CEPPE - Post-Graduation and Research Centre of the University Guarulhos, 07023-070, Guarulhos (SP), Praça Tereza Cristina 1, Brazil, Institute of Geosciences, University of São Paulo, Cidade Universitária, 05508-080, Sao Paulo (SP), Rua do Lago 562, Brazil

A fossil angiosperm from the Aptian Crato Formation (Brazil), Schenkeriphyllum glanduliferum n. gen. n. sp. is described and phylogenetically analyzed. The taxon consists of branching axes with attached simple sessile, sheathing, narrowly ovate glanduliferous leaves with ethereal oil cells and solitary axillary medium sized flowers. Several of the multiparted flowering structures are reasonably well preserved in differing stages of maturity. Broad obovate tepals, (stamens?), glanduliferous staminodes (more than 30?) and free carpels are arranged on a flat to slightly convex receptacle. The gynoecium consists of ca. 12 to 20 free carpels. Among recent Magnoliales only Magnoliaceae share many characters of the flowering structures with Schenkeriphyllum. A phylogenetic analysis confirms that Schenkeriphyllum represents most likely a sister taxon to Endressinia for which the diagnosis is slightly emended. Both fossil taxa may represent together a sister clade to extant Magnoliaceae. © 2012 Elsevier B.V.

Angiosperm; Brazil; Crato Formation; Early Cretaceous; Magnoliales; Phylogeny

Brazil; Magnoliaceae; Magnoliales; Magnoliophyta; angiosperm; Aptian; fossil assemblage; fossil record; Gondwana; new genus; new species; paleobotany; phylogenetics; phylogeny

B.A.R. Mohr; Museum für Naturkunde der Humboldt-Universität Berlin, Abteilung Sammlungen, D-10 115 Berlin, Invalidenstrasse 43, Germany; email: barbara.mohr@mfn-berlin.de

Rev. Palaeobot. Palynol.

2-s2.0-84871823902

Mundim J.V.; Dantas T.S.; Henriques D.K.; de Faria-Júnior J.E.Q.; Dos Anjos D.A.A.; Bordin J.; Câmara P.E.A.S.; Carvalho-Silva M.

Mundim, Júlia V. (57208323993); Dantas, Tamara S. (57200180943); Henriques, Diego K. (54408748500); de Faria-Júnior, Jair E. Q. (57217086483); Dos Anjos, Dafne A. A. (57447066200); Bordin, Juçara (25721880000); Câmara, Paulo E. A. S. (24553661500); Carvalho-Silva, Micheline (24553652000)

57208323993; 57200180943; 54408748500; 57217086483; 57447066200; 25721880000; 24553661500; 24553652000

Small areas and small plants: Updates on Antarctic bryophytes

Acta Botanica Brasilica

10.1590/0102-33062020abb0431

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85124390726&doi=10.1590%2f0102-33062020abb0431&partnerID=40&md5=0c5713cc35cb4c7821f292b310c43fb4

Universidade de Brasília, DF, Brasília, 70910-900, Brazil; Jardim Botânico de Brasília, DF, Brasília, 71680-001, Brazil; Universidade Estadual do Rio Grande do Sul, RS, Osório, 95520-000, Brazil

Mundim J.V., Universidade de Brasília, DF, Brasília, 70910-900, Brazil; Dantas T.S., Universidade de Brasília, DF, Brasília, 70910-900, Brazil; Henriques D.K., Universidade de Brasília, DF, Brasília, 70910-900, Brazil; de Faria-Júnior J.E.Q., Jardim Botânico de Brasília, DF, Brasília, 71680-001, Brazil; Dos Anjos D.A.A., Universidade de Brasília, DF, Brasília, 70910-900, Brazil; Bordin J., Universidade Estadual do Rio Grande do Sul, RS, Osório, 95520-000, Brazil; Câmara P.E.A.S., Universidade de Brasília, DF, Brasília, 70910-900, Brazil; Carvalho-Silva M., Universidade de Brasília, DF, Brasília, 70910-900, Brazil

Snow Island is part of the South Shetland Archipelago in Antarctica. Most of its surface is permanently covered by snow, yet it has an important paleobotanical site. There are no protected areas on the island and no recent data regarding its vegetation. This study aimed to collect and identify fresh samples of bryophytes from President Head Peninsula of Snow Island. Samples were collected during the summers of 2015 and 2018. Among the 24 bryophyte species identified in this work, 19 are new occurrences for Snow Island, bringing the total known for the island to 29 species. The most diverse family is Pottiaceae, with four species of two genera, followed by Bryaceae and Polytrichaceae, with three species each. The results show that the diversity of mosses on Snow Island is greater than previously reported. We here demonstrated the region’s importance and the 190 % increase in Snow Island species number. This study also updated the Antarctic distribution of some species. © 2022, Sociedade Botanica do Brasil. All rights reserved.

Bryophyta; Flora; Maritime Antarctica; New occurrence; South Shetlands

J.V. Mundim; Universidade de Brasília, Brasília, DF, 70910-900, Brazil; email: mundimjv@gmail.com

Sociedade Botanica do Brasil

All Open Access; Gold Open Access

2-s2.0-85124390726

Polck M.A.R.; de Carvalho M.S.S.; Baudouin L.V.A.; Cruz N.M.C.

Polck, Márcia Aparecida dos Reis (57189578909); de Carvalho, Marise Sardenberg Salgado (24766145900); Baudouin, Luiz Vitor de Araújo (57189580275); Cruz, Norma Maria da Costa (57189580629)

57189578909; 24766145900; 57189580275; 57189580629

The fossil fish collection from Museu de Ciências da Terra, Rio de Janeiro; [A Coleção de Peixes Fósseis do Museu de Ciências da Terra, Rio de Janeiro]

Anuario do Instituto de Geociencias

10.11137/2016_2_88_97

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973128257&doi=10.11137%2f2016_2_88_97&partnerID=40&md5=866822f660054c8eddabb1e9b799dd4c

Departamento Nacional de Produção Mineral (DNPM), Av. Pasteur, 404, 2º andar, Urca, Rio de Janeiro, 22290-240, RJ, Brazil; Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Geociências, Prédio do Centro de Ciências Matemáticas e da Natureza, Av. Athos da Silveira Ramos, 274, Bloco F, Ilha do Fundão, Rio de Janeiro, 21941-916, RJ, Brazil; CPRM-Serviço Geológico do Brasil, DIPALE, Av. Pasteur, 404, Urca, Rio de Janeiro, 22290-240, RJ, Brazil

Polck M.A.R., Departamento Nacional de Produção Mineral (DNPM), Av. Pasteur, 404, 2º andar, Urca, Rio de Janeiro, 22290-240, RJ, Brazil; de Carvalho M.S.S., Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Geociências, Prédio do Centro de Ciências Matemáticas e da Natureza, Av. Athos da Silveira Ramos, 274, Bloco F, Ilha do Fundão, Rio de Janeiro, 21941-916, RJ, Brazil; Baudouin L.V.A., CPRM-Serviço Geológico do Brasil, DIPALE, Av. Pasteur, 404, Urca, Rio de Janeiro, 22290-240, RJ, Brazil; Cruz N.M.C., CPRM-Serviço Geológico do Brasil, DIPALE, Av. Pasteur, 404, Urca, Rio de Janeiro, 22290-240, RJ, Brazil

The fossil collection of the Museu de Ciências da Terra/RJ consists of six sub-collections (Microfossils, Paleoinvertebrates, Paleobotanics, Fish, Reptiles and Mammals) and has an invaluable historical importance. In addition, the great number of specimens of great representation of Brazilian sedimentary basins is fundamental to paleontologists and other research scientists. As the collection is organized by the number of the registry book, the analysis and correlations of basins without these numbers are difficult to perform. The aim of this paper is to present a quantitative analysis of the fossil fish collection of the Museu de Ciências da Terra, showing the representation of Brazilian sedimentary basins, with special attention to the Araripe basin because of its greatest number of specimens. Besides including foreign material, the collection of fossil fish represents 17 sedimentary basins. The Araripe Basin has 27,7% of the entire paleoictiological collection, with a total of 24 genera and one identified specimen only in the family taxonomic level. The organization of this data becomes essential to many Brazilian and foreign researchers that seek information about collection samples represented in Brazilian sedimentary basins. Thus, the BASE PALEO can enter the “Basin” field to make this information available on the internet. © 2016, Universidade Federal do Rio de Janeiro. All rights reserved.

Collection; Museum; Paleoictiology

Araripe Basin; Brazil; Rio de Janeiro [Brazil]; Mammalia; Reptilia; fish; fossil record; museum; paleoecology; quantitative analysis; specimen bank; taxonomy; World Wide Web

Universidade Federal do Rio de Janeiro

Anu. Inst. Geocienc.

All Open Access; Gold Open Access; Green Open Access

2-s2.0-84973128257

González-Reyes I.; Christie D.A.; Schneider-Valenzuela I.; Venegas-González A.; Muñoz A.A.; Hadad M.; Gipoulou-Zuñiga T.; Tapia-Marzan V.; Gibson-Carpintero S.; Santini-Junior L.; LeQuesne C.; Villalba R.

González-Reyes, Álvaro (56471620000); Christie, Duncan A (7102638371); Schneider-Valenzuela, Isadora (58475303000); Venegas-González, Alejandro (56418626700); Muñoz, Ariel A (16219919500); Hadad, Martin (55566763300); Gipoulou-Zuñiga, Tania (57221868252); Tapia-Marzan, Valeria (58475303100); Gibson-Carpintero, Stephanie (57880816100); Santini-Junior, Luiz (57204678862); LeQuesne, Carlos (15729329500); Villalba, Ricardo (7005257933)

56471620000; 7102638371; 58475303000; 56418626700; 16219919500; 55566763300; 57221868252; 58475303100; 57880816100; 57204678862; 15729329500; 7005257933

Recent multispecies tree-growth decline reveals a severe aridity change in Mediterranean Chile

Environmental Research Letters

10.1088/1748-9326/ad4049

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85194410944&doi=10.1088%2f1748-9326%2fad4049&partnerID=40&md5=e4e16a0c70ce248de912c0ebde9d9e6c

Instituto de Ciencias de la Tierra, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Centro de Humedales río Cruces CEHUM, Universidad Austral de Chile, Valdivia, Chile; Laboratorio de Dendrocronología y Cambio Global, Universidad Austral de Chile, Valdivia, Chile; Centro FONDAP de Investigación de Dinámicas de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile; Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Chile; Center for Climate and Resilience Research (CR)2, Santiago, Chile; Cape Horn International Center (CHIC), Parque Etnobotánico Omora, Universidad de Magallanes, Puerto Williams, Chile; Laboratorio de Dendrocronología y Estudios Ambientales, Instituto de Geografía, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Centro de Acción Climática, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Programa de Doctorado en Ciencias mención Ecología y Biología Evolutiva, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, , Nuñoa, Santiago, 7750000, Chile; Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O’Higgins, San Fernando, Chile; Centro Regional de Investigación e Innovación para la Sostenibilidad de la Agricultura y los Territorios Rurales CERES, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Quillota, 2260000, Chile; Laboratorio de Dendrocronología de Zonas Áridas. CIGEOBIO (CONICET-UNSJ), San Juan, Argentina; Grupo de Pesquisa em Ecologia Florestal, Instituto de Desenvolvimento Sustentável Mamirauá, Amazonas, Tefe, Brazil; Laboratorio de Dendrocronología e Historia Ambiental, IANIGLA-CCT CONICET, Mendoza, Argentina

González-Reyes I., Instituto de Ciencias de la Tierra, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile, Centro de Humedales río Cruces CEHUM, Universidad Austral de Chile, Valdivia, Chile, Laboratorio de Dendrocronología y Cambio Global, Universidad Austral de Chile, Valdivia, Chile, Centro FONDAP de Investigación de Dinámicas de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile; Christie D.A., Laboratorio de Dendrocronología y Cambio Global, Universidad Austral de Chile, Valdivia, Chile, Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Chile, Center for Climate and Resilience Research (CR)2, Santiago, Chile, Cape Horn International Center (CHIC), Parque Etnobotánico Omora, Universidad de Magallanes, Puerto Williams, Chile; Schneider-Valenzuela I., Laboratorio de Dendrocronología y Estudios Ambientales, Instituto de Geografía, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile, Centro de Acción Climática, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile, Programa de Doctorado en Ciencias mención Ecología y Biología Evolutiva, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, , Nuñoa, Santiago, 7750000, Chile; Venegas-González A., Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O’Higgins, San Fernando, Chile; Muñoz A.A., Center for Climate and Resilience Research (CR)2, Santiago, Chile, Laboratorio de Dendrocronología y Estudios Ambientales, Instituto de Geografía, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile, Centro de Acción Climática, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile, Centro Regional de Investigación e Innovación para la Sostenibilidad de la Agricultura y los Territorios Rurales CERES, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Quillota, 2260000, Chile; Hadad M., Laboratorio de Dendrocronología de Zonas Áridas. CIGEOBIO (CONICET-UNSJ), San Juan, Argentina; Gipoulou-Zuñiga T., Laboratorio de Dendrocronología y Cambio Global, Universidad Austral de Chile, Valdivia, Chile; Tapia-Marzan V., Laboratorio de Dendrocronología y Estudios Ambientales, Instituto de Geografía, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile; Gibson-Carpintero S., Instituto de Ciencias Agroalimentarias, Animales y Ambientales (ICA3), Universidad de O’Higgins, San Fernando, Chile; Santini-Junior L., Grupo de Pesquisa em Ecologia Florestal, Instituto de Desenvolvimento Sustentável Mamirauá, Amazonas, Tefe, Brazil; LeQuesne C., Laboratorio de Dendrocronología y Cambio Global, Universidad Austral de Chile, Valdivia, Chile, Instituto de Conservación Biodiversidad y Territorio, Universidad Austral de Chile, Valdivia, Chile; Villalba R., Laboratorio de Dendrocronología e Historia Ambiental, IANIGLA-CCT CONICET, Mendoza, Argentina

Soil moisture (SM) is a crucial factor in the water cycle, sustaining ecosystems and influencing local climate patterns by regulating the energy balance between the soil and atmosphere. Due to the absence of long-term, in-situ measurements of SM, studies utilizing satellite-based data and tree-ring analysis have become valuable in assessing variations of SM at regional and multi-century scales, as well as determining its effects on tree growth. This information is particularly pertinent in biodiversity hotspots made up of semi-arid ecosystems currently threatened by climate change. In the Mediterranean Chile region (MC; 30°-37° S), an ongoing megadrought since 2010 has resulted in a significant decline in the forest throughout the area. However, the impact of SM on tree growth at a multi-species and regional level remains unexplored. We analyzed a new network of 22 tree-ring width chronologies across the MC to evaluate the main spatiotemporal tree-growth patterns of nine woody species and their correlation with SM, using PCA. We also reconstructed the SM variations over the past four centuries and assessed its connection with large-scale climate forcings. Our results indicate that the primary growth patterns (PC1) explained 27% of the total variance and displayed a significant relationship with SM between 1982-2015 (r = 0.91), accurately reflecting the current megadrought. The tree-ring SM reconstruction covers the period 1616-2018 and shows a strong decrease around the year 2007, revealing an unprecedented recent change in aridity with respect to the last four centuries. The intensity of the South Pacific subtropical anticyclone, which primarily owe their existence to the subsiding branch of the Hadley Cell, appears as the primary climatic mechanism correlated with the reconstruction and the present aridity conditions in MC. The current SM conditions align with anticipated aridity changes in MC, providing a bleak perspective of future regional climate. © 2024 The Author(s). Published by IOP Publishing Ltd.

drought stress; growth decline; Mediterranean Chile; soil moisture

Chile; Pacific Ocean; Pacific Ocean (South); Biodiversity; Climate change; Ecosystems; Forestry; 'current; Drought stress; Growth decline; Growth patterns; Local climate; Mediterranean chile; Megadroughts; Multi-species; Tree growth; Water cycle; aridity; climate change; drought stress; growth response; Mediterranean environment; paleobotany; population decline; soil moisture; tree ring; woody plant; Soil moisture

I. González-Reyes; Instituto de Ciencias de la Tierra, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; email: alvaro.gonzalez@uach.cl

Institute of Physics

All Open Access; Gold Open Access

2-s2.0-85194410944

Bertrand G.; Hirata R.; Auler A.; Cruz F.; Cary L.; Petelet-Giraud E.; Chatton E.; Aquilina L.; Moquet J.-S.; Bustamante M.G.; Millo C.; Martins V.; Montenegro S.; Celle-Jeanton H.

Bertrand, Guillaume (35336089700); Hirata, Ricardo (35585210200); Auler, Augusto (6602789451); Cruz, Francisco (8287100700); Cary, Lise (8583573500); Petelet-Giraud, Emmanuelle (6602254822); Chatton, Eliot (56688550100); Aquilina, Luc (6603787846); Moquet, Jean-Sébastien (16444399200); Bustamante, Maria Gracia (57190275402); Millo, Christian (9736923300); Martins, Veridiana (55392499900); Montenegro, Suzanna (14523069600); Celle-Jeanton, Hélène (55897783400)

35336089700; 35585210200; 6602789451; 8287100700; 8583573500; 6602254822; 56688550100; 6603787846; 16444399200; 57190275402; 9736923300; 55392499900; 14523069600; 55897783400

Groundwater isotopic data as potential proxy for Holocene paleohydroclimatic and paleoecological models in NE Brazil

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2017.01.004

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85009128723&doi=10.1016%2fj.palaeo.2017.01.004&partnerID=40&md5=fadcf90fb35a4fc85670f0767c1374c7

Civil Engineering Department, Universidade Federal do Pernambuco, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil; Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Carste Consultores Associados, Rua Aquiles Lobo, 297 – Floresta – Belo Horizonte – MG – CEP, 30150-160, Brazil; Bureau de Recherches Géologiques et Minières (BRGM), 3 avenue Claude-Guillemin BP 36009, Orléans, 45060, France; Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, Rennes Cedex, 35042, France; Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, 05508-900, Brazil; Chrono-Environnement, Université de Franche-Comté, CNRS UMR 6249, 16 Route de Gray, Besançon, 25030, France

Bertrand G., Civil Engineering Department, Universidade Federal do Pernambuco, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil; Hirata R., Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Auler A., Carste Consultores Associados, Rua Aquiles Lobo, 297 – Floresta – Belo Horizonte – MG – CEP, 30150-160, Brazil; Cruz F., Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Cary L., Bureau de Recherches Géologiques et Minières (BRGM), 3 avenue Claude-Guillemin BP 36009, Orléans, 45060, France; Petelet-Giraud E., Bureau de Recherches Géologiques et Minières (BRGM), 3 avenue Claude-Guillemin BP 36009, Orléans, 45060, France; Chatton E., Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, Rennes Cedex, 35042, France; Aquilina L., Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, Rennes Cedex, 35042, France; Moquet J.-S., Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Bustamante M.G., Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Millo C., Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, São Paulo, 05508-900, Brazil; Martins V., Instituto de Geociências, Universidade de São Paulo, Rua do lago 562, Sao Paulo, 05508-080, Brazil; Montenegro S., Civil Engineering Department, Universidade Federal do Pernambuco, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil; Celle-Jeanton H., Chrono-Environnement, Université de Franche-Comté, CNRS UMR 6249, 16 Route de Gray, Besançon, 25030, France

Holocene paleoclimatic patterns in NE Brazil are recognized to present singular characteristics when compared with the remaining tropical South-America. In particular, isotopic variations in speleothem calcite highlight that in contrast to the rest of tropical SA, NE Brazil experienced humid conditions during lower summer insolation, i.e. throughout the Early-Mid Holocene, and aridity when, as nowadays, summer insolation was high. In parallel, paleobotanical and palynological investigations suggest that these wetter conditions, also associated with colder climate, could have promoted the setting of ecological corridors between the current Amazonian (continental) and Atlantic (littoral) forests. In this context, this work aims at showing how groundwater isotopic data could be used as a complementary proxy to further explain these Holocene paleohydroclimatic and paleoecologic processes. By comparing δ18O, δ2H and d-excess of modern waters with Early-Mid Holocene groundwater in Recife (Pernambuco state, NE Brazil), differences in recharge patterns and moisture origin can be constrained. We find that Early-Mid Holocene waters present higher d-excess than the modern groundwater. Given that the Early-mid Holocene colder and wetter conditions (higher relative humidity) should lead to a reverse trend, i.e. lower d-excess, we hypothesize that the groundwater moisture sources was heavily recycled. Such a hypothesis would be consistent with the presence of a rainforest-type ecosystem, similar to the present Amazonian forest, in the currently arid NE Brazil. These observations highlight the potential added value of the groundwater isotopes proxy to discuss the interrelationships of paleohydrological and paleoecological patterns during the Early-Mid Holocene. These new proxies might allow the spatio-temporal extent of the above-mentioned ecological corridors to be discussed. © 2017 Elsevier B.V.

Brazil; d-excess; Groundwater; Holocene; Rain forest; δ¹⁸O

Brazil; Pernambuco; Recife; aridity; calcite; groundwater resource; Holocene; isotopic analysis; oxygen isotope; paleoecology; paleohydrology; proxy climate record; rainforest; spatiotemporal analysis; speleothem

G. Bertrand; Civil Engineering Department, Universidade Federal do Pernambuco, Recife, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Brazil; email: guillaume.bertrand@email.com

Palaeogeogr. Palaeoclimatol. Palaeoecol.

All Open Access; Green Open Access

2-s2.0-85009128723

Liu B.; Spiekermann R.; Zhao C.; Püttmann W.; Sun Y.; Jasper A.; Uhl D.

Liu, Bangjun (57207094228); Spiekermann, Rafael (56925270700); Zhao, Cunliang (15838338000); Püttmann, Wilhelm (7004644513); Sun, Yuzhuang (55581169300); Jasper, André (7003460953); Uhl, Dieter (56275118900)

57207094228; 56925270700; 15838338000; 7004644513; 55581169300; 7003460953; 56275118900

Evidence for the repeated occurrence of wildfires in an upper Pliocene lignite deposit from Yunnan, SW China

International Journal of Coal Geology

10.1016/j.coal.2021.103924

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122286670&doi=10.1016%2fj.coal.2021.103924&partnerID=40&md5=cdc6f4029db15e584d501453c4a0cb5e

School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, Hebei, China; Department of Environmental Analytical Chemistry, Institute of Atmospheric and Environmental Sciences, Goethe-University Frankfurt am Main, Frankfurt am Main, Germany; Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, 95914-014, Lajeado, Rio Grande do Sul, Brazil

Liu B., School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, Hebei, China, Department of Environmental Analytical Chemistry, Institute of Atmospheric and Environmental Sciences, Goethe-University Frankfurt am Main, Frankfurt am Main, Germany; Spiekermann R., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany; Zhao C., School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, Hebei, China; Püttmann W., Department of Environmental Analytical Chemistry, Institute of Atmospheric and Environmental Sciences, Goethe-University Frankfurt am Main, Frankfurt am Main, Germany; Sun Y., School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, Hebei, China; Jasper A., Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, 95914-014, Lajeado, Rio Grande do Sul, Brazil; Uhl D., Senckenberg Forschungsinstitut und Naturmuseum Frankfurt, Senckenberganlage 25, Frankfurt am Main, 60325, Germany, Programa de Pós-Graduação em Ambiente e Desenvolvimento, Universidade do Vale do Taquari – Univates, Avenida Avelino Talini 171, 95914-014, Lajeado, Rio Grande do Sul, Brazil

Charcoal remains and bulk lignites collected from the late Pliocene Jinsuo Basin in Yunnan, southwestern China, have been studied to reveal changes in the wildfire regime related to changes of the palaeoenvironment, palaeoclimate, and paleobotany. Different types of wildfire occurred in this paleomire with a predominance of low-temperature surface fires, as indicated by mean inertinite reflectance (Ro) values ranging from 1% to 2% in most samples. High-temperature fires are less recorded and occurred more frequently in dark layers compared with pale layers and charcoal layers, as deduced from the elevated proportion of high Ro values (>3%) produced by crown fires or high-temperature surface fires. Wildfire distribution in pale and dark layers was probably influenced by, changes of both plant community and of the depositional environment during their formation. Charcoal layers represent in situ surface and ground fires, whereas pale and dark layers probably record both in situ and remote fire events inside and/or around the basin. PAH were detected in all samples throughout the whole lignite seam, indicating that burning temperatures were low (<400 °C) in most cases in the peatland. Evidence of pre-charring decay observed in some macro-charcoal fragments and pyrogenic inertinite, along with the relatively high content of perylene, shows that decaying wood materials could be a part of the source fuel for the combustion during ground or surface fires. The occurrence and spread of wildfires in the basin during the formation of pale layers probably owe to the drought conditions driven by climate, whereas seasonality of precipitation and temperature was probably the major factor for the occurrence of wildfires recorded from dark layers. The distribution of wildfires within the profile may be relate to climate changes during the mid-Piacenzian. © 2022 Elsevier B.V.

Charcoal; Inertinite; Lignite; Microbial decay; Wildfires

China; Yunnan; Climate change; Fires; Lignite; Polycyclic aromatic hydrocarbons; Temperature; Dark layers; Highest temperature; Inertinite; Late Pliocene; Lignite deposits; Microbial decay; Palaeoclimate; Palaeoenvironment; Pliocene; Wildfire regimes; charcoal; combustion; drought; high temperature; lignite; PAH; paleoclimate; Pliocene; wildfire; Charcoal

B. Liu; School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, China; email: liubangjun@hebeu.edu.cn

2-s2.0-85122286670

De França Alves R.; De Assis Ribeiro DosSantos F.

De França Alves, Rodolfo (56138565600); De Assis Ribeiro DosSantos, Francisco (57222507544)

56138565600; 57222507544

Plant sources for bee pollen load production in Sergipe, northeast Brazil

10.1080/01916122.2013.846280

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899586133&doi=10.1080%2f01916122.2013.846280&partnerID=40&md5=b4caf4db4676e6fd1dcbe8034bd5c33a

Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Universidade Estadual de Feira de Santana, Bahia, 44036-900 Feira de Santana, Brazil

De França Alves R., Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Universidade Estadual de Feira de Santana, Bahia, 44036-900 Feira de Santana, Brazil; De Assis Ribeiro DosSantos F., Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Universidade Estadual de Feira de Santana, Bahia, 44036-900 Feira de Santana, Brazil

In Brazil, the production of bee pollen loads began modestly in the late 1980s, stimulated by consumption of natural products. Demand and consumption have increased, and there has been no increase in scientific studies. This work aims to expand scientific knowledge by identifying the plants used by Apis mellifera L. as sources of pollen loads in the State of Sergipe, Brazil. Twelve samples were collected from January to December 2011, in the municipalities of Barra dos Coqueiros, Brejo Grande, Estância and Pacatuba, all located in the eastern region of Sergipe. For the study of the pollen grains, the bee pollen underwent the usual laboratory processing techniques (acetolysis). For the analysis 500 grains were counted from each sample and, for botanical identification, the specialised literature and the pollen library were used. A total of 46 pollen types, distributed in 19 families, were found. Fabaceae was the family displaying the greatest diversity of pollen types (19), and the genus Mimosa L. was the most diverse (8). The families Asteraceae, Anacardiaceae, Myrtaceae and Rubiaceae were represented by three pollen types each, and Lamiaceae, only two types. The other 13 families presented one pollen type each. Only eight pollen types were classified as very frequent (> 50%); however, only Cocos nucifera occurred in 100% of the samples. It can be concluded that the families Arecaceae and Fabaceae are the major pollen sources for production of bee pollen in the state of Sergipe, followed by Asteraceae, Anacardiaceae, Poaceae and Rubiaceae. Pollen spectra revealed that at least 29 genera of plants contribute to the bee pollen load production in the tropical rainforest zone in northeastern Brazil. © 2014 © 2014 AASP - The Palynological Society.

Arecaceae; Bee pollen loads; bees (Apis mellifera L); Brazil; Fabaceae; pollen analysis

Brazil; Sergipe; Anacardiaceae; Apis mellifera; Apoidea; Arecaceae; Asteraceae; Cocos nucifera; Fabaceae; Lamiaceae; Mimosa; Myrtaceae; Poaceae; Rubiaceae; bee; legume; paleobotany; paleoecology; palynology; species diversity

R. De França Alves; Departamento de Ciências Biológicas, Laboratório de Micromorfologia Vegetal, Universidade Estadual de Feira de Santana, Bahia, 44036-900 Feira de Santana, Brazil; email: rodolfoalves_18@hotmail.com

American Association of Stratigraphic Palynologists

2-s2.0-84899586133

Baumgardner R.W., Jr.; DiMichele W.A.; Vieira N.D.S.

Baumgardner, Robert W. (7004837106); DiMichele, William A. (7004381630); Vieira, Nathalia de Siqueira (57190385228)

7004837106; 7004381630; 57190385228

An early Permian coastal flora dominated by Germaropteris martinsii from basinal sediments in the Midland Basin, West Texas

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2016.07.024

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979585465&doi=10.1016%2fj.palaeo.2016.07.024&partnerID=40&md5=a97be779ba14d2325b308fa34b066f8e

Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, 78713, TX, United States; Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, 20560, United States; Universidade Federal de Ouro Preto, Engenharia Geologica, Ouro Preto, 35400000, Minas Gerais, Brazil

Baumgardner R.W., Jr., Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, 78713, TX, United States; DiMichele W.A., Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, 20560, United States; Vieira N.D.S., Universidade Federal de Ouro Preto, Engenharia Geologica, Ouro Preto, 35400000, Minas Gerais, Brazil

Fossils found in cores from wells in the Midland Basin of West Texas include several kinds of terrestrial plants and a variety of marine animal remains. Depositional settings ranged from basin slope to deep-water basin floor, hence the presence of land plants was unexpected. The fossil plant assemblage is depauperate, dominated by Germaropteris martinsii, a Permian-age peltasperm. Other specimens include the peltasperm Supaia, Sphenopteris germanica, axes of uncertain affinity, and incertae sedis remains presumed to be terrestrial plants. Fossil plants are found predominantly in fine-grained, siliceous mudrocks between coarser-grained calcareous floatstones and wackestones/packstones interpreted as debrites and turbidites, suggesting that the plants were carried from land by surface currents before sinking to the basin floor and being buried by slowly accumulating hemipelagic sediment. Specimens were examined from drillcores in 14 wells spanning an interval from the lower Wolfcamp through the lower Leonard. This record of G. martinsii in lower Permian Wolfcamp rocks is among the earliest occurrences of these plants, which have been found most abundantly in upper Permian strata of Western Europe. © 2016

Peltasperm; Sphenopteris; Supaia; Wolfcamp

Midland Basin; Permian Basin; Texas; Texas; United States; Western Europe; Animalia; Embryophyta; Sphenopteris; coastal sediment; fern; flora; fossil assemblage; fossil record; gymnosperm; paleobotany; Permian; type specimen

R.W. Baumgardner; Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, 78713, United States; email: robert.baumgardner@beg.utexas.edu

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-84979585465

Guimarães J.T.F.; Rodrigues T.M.; Reis L.S.; de Figueiredo M.M.J.C.; da Silva D.F.; Alves R.; Giannini T.C.; Carreira L.M.M.; Dias A.C.R.; da Silva E.F.; Sahoo P.K.; Sousa da Silva M.; Souza-Filho P.W.M.

Guimarães, José Tasso Felix (24281342200); Rodrigues, Tarcísio Magevski (57191220794); Reis, Luiza Santos (56255247400); de Figueiredo, Mariana Maha Jana Costa (57194457253); da Silva, Delmo Fonseca (57195323040); Alves, Ronnie (7102691284); Giannini, Tereza Cristina (7003671809); Carreira, Léa Maria Medeiros (7003869425); Dias, Anna Christina Rio (57195070818); da Silva, Edilson Freitas (57195062392); Sahoo, Prafulla Kumar (49061518600); Sousa da Silva, Marcio (57191223881); Souza-Filho, Pedro Walfir Martins (25029116500)

24281342200; 57191220794; 56255247400; 57194457253; 57195323040; 7102691284; 7003671809; 7003869425; 57195070818; 57195062392; 49061518600; 57191223881; 25029116500

Modern pollen rain as a background for palaeoenvironmental studies in the Serra dos Carajás, southeastern Amazonia

10.1177/0959683616683260

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027518773&doi=10.1177%2f0959683616683260&partnerID=40&md5=0d457b4cb526fadd58b867564d54b6ba

Instituto Tecnológico Vale, Brazil; Departamento de Ferrosos Norte, Gerência de Meio Ambiente–Minas de Carajás, Brazil; Centro de Energia Nuclear na Agricultura, Piracicaba, Brazil; Programa de Pós-graduação em Ciência da Computação, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Brazil; Coordenação de Botânica, Museu Paraense Emílio Goeldi, Brazil; Programa de Pós-graduação em Geologia e Geoquímica, Instituto de Geociências, Universidade Federal do Pará, Brazil

Guimarães J.T.F., Instituto Tecnológico Vale, Brazil; Rodrigues T.M., Departamento de Ferrosos Norte, Gerência de Meio Ambiente–Minas de Carajás, Brazil; Reis L.S., Instituto Tecnológico Vale, Brazil, Centro de Energia Nuclear na Agricultura, Piracicaba, Brazil; de Figueiredo M.M.J.C., Instituto Tecnológico Vale, Brazil; da Silva D.F., Departamento de Ferrosos Norte, Gerência de Meio Ambiente–Minas de Carajás, Brazil; Alves R., Instituto Tecnológico Vale, Brazil, Programa de Pós-graduação em Ciência da Computação, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Brazil; Giannini T.C., Instituto Tecnológico Vale, Brazil; Carreira L.M.M., Coordenação de Botânica, Museu Paraense Emílio Goeldi, Brazil; Dias A.C.R., Coordenação de Botânica, Museu Paraense Emílio Goeldi, Brazil; da Silva E.F., Coordenação de Botânica, Museu Paraense Emílio Goeldi, Brazil; Sahoo P.K., Instituto Tecnológico Vale, Brazil; Sousa da Silva M., Instituto Tecnológico Vale, Brazil; Souza-Filho P.W.M., Instituto Tecnológico Vale, Brazil, Programa de Pós-graduação em Geologia e Geoquímica, Instituto de Geociências, Universidade Federal do Pará, Brazil

Several alternative interpretations of the pollen records of lake sediments in the Amazonia may arise due to a lack of understanding of the modern environments, mainly related to pollen–vegetation relationship. Therefore, in this work, we studied the modern pollen rain in sediments of the Amendoim Lake, plateaus of the Serra Sul dos Carajás, southeastern Amazonia. This study indicates the predominance of pollen grains from forest formation (ombrophilous forests and capão florestal) over montane savanna in the lake sediments, despite the fact that montane savanna occupies ~90% of the drainage basin. Additionally, these sediments reflect stronger signal of pollen from ombrophilous forests that occur in the slopes of the plateau. Important components of montane savanna such as Vellozia and Cereus were not observed in the modern pollen rain, which may be related to their shorter flowering periods restricted to the beginning of wetter conditions. The absence of Sacoglottis, Trichilia, Clusia, Emmotum, Guapira and Simarouba in the pollen rain is likely associated with different pollination strategy. The occurrence of windblown pollen of Alchornea, Pseudolmedia, Ilex and Cecropia, which are found from low to highlands of the Carajás region, reinforces a regional vegetation signal in sediments. Several plants from the studied site have been improperly described, according to taxonomy and ecology. For example, the current occurrence of Ilex and Styrax in the study site clearly suggests that they cannot be used as indicators of colder palaeoclimate conditions, as previously described. In addition, Poaceae can be found in drier to wetter substrate conditions, and abundance of their pollen grains in lakes can significantly vary according to relief morphology and cannot indicate palaeovegetation openness. Therefore, this work is a good background for further palaeobotany studies for this region. © 2017, © The Author(s) 2017.

Amazonia; Holocene; montane savanna; palynology; pollen rain; rainforest; Serra dos Carajás

Alchornea; Cecropia; Emmotum; Guapira; Ilex; Poaceae; Pseudolmedia; Sacoglottis; Simarouba; Styrax; Trichilia; Vellozia

J.T.F. Guimarães; Instituto Tecnológico Vale, Nazaré, Belém, Rua Boaventura da Silva 955, 66055-090, Brazil; email: tasso.guimaraes@itv.org

SAGE Publications Ltd

2-s2.0-85027518773

Kurzawe F.; Iannuzzi R.; Merlotti S.; Rößler R.; Noll R.

Kurzawe, Francine (36515130500); Iannuzzi, Roberto (6603970107); Merlotti, Sheila (35293007700); Rößler, Ronny (56231798500); Noll, Robert (7005067615)

36515130500; 6603970107; 35293007700; 56231798500; 7005067615

New gymnospermous woods from the Permian of the Parnaíba Basin, Northeastern Brazil, Part I: Ductoabietoxylon, Scleroabietoxylon and Parnaiboxylon

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2012.12.004

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878155762&doi=10.1016%2fj.revpalbo.2012.12.004&partnerID=40&md5=9303593a7536836e653b03e2fecf3b68

Curso de Pós-Graduação em Geociências, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul., CEP 91.509-900, Porto Alegre, Caixa Postal 15.001, Brazil; Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, CEP 91.509-900, Porto Alegre, Caixa Postal 15.001, Brazil; Departamento de Botânica, Universidade Federal de Santa Catarina. Campus Universitário, CEP 88.040-900, Florianópolis, Brazil; Museum für Naturkunde Chemnitz, D-09111, Chemnitz, Moritzstraße 20, Germany; not available, D - 67311, Tiefenthal, In den Birkengärten 30, Germany

Kurzawe F., Curso de Pós-Graduação em Geociências, Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul., CEP 91.509-900, Porto Alegre, Caixa Postal 15.001, Brazil; Iannuzzi R., Departamento de Paleontologia e Estratigrafia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, CEP 91.509-900, Porto Alegre, Caixa Postal 15.001, Brazil; Merlotti S., Departamento de Botânica, Universidade Federal de Santa Catarina. Campus Universitário, CEP 88.040-900, Florianópolis, Brazil; Rößler R., Museum für Naturkunde Chemnitz, D-09111, Chemnitz, Moritzstraße 20, Germany; Noll R., not available, D - 67311, Tiefenthal, In den Birkengärten 30, Germany

The Permian permineralized flora of the Parnaíba Basin, NE Brazil, has been studied since 1872, when the first fossil fern was described from this region. Since then, many fossil pteridophytes have been collected and studied; however, the gymnosperms are still little known. The present contribution focuses on the study of gymnospermous woods from the Motuca Formation. This study presents four new taxa of which three are formally described: Ductoabietoxylon solis gen. et sp. nov., Scleroabietoxylon chordas gen. et sp. nov., Parnaiboxylon rohnae gen. et sp. nov. and Parnaiboxylon sp. 1. The first two genera share an outstanding feature: the presence of abietinoid pitting, a rare characteristic among fossil woods, and a derived stage in the evolution of xylem rays. The presence of several new genera and species in the lowermost Motuca Formation reveals the richness and importance of this area for paleobotanical studies. © 2013 Elsevier B.V.

Parnaíba Basin; Permian; Permineralized gymnosperm woods

Brazil; Parnaiba Basin; Filicophyta; Gymnospermae; Pteridophyta; fern; fossil record; gymnosperm; Permian; species richness; wood; xylem

F. Kurzawe; Department of Earth Sciences, Royal Holloway, University of London, Egham, Surrey, TW20 0EX, United Kingdom; email: franly_k@hotmail.com

Rev. Palaeobot. Palynol.

2-s2.0-84878155762

Alzer F.D.C.; Couto R.S.; Lopes R.C.; Gonçalves-Esteves V.; Barbieri Ferreira Mendonça C.

Alzer, Fernanda da Costa (57214895366); Couto, Ricardo Sousa (56195397800); Lopes, Rosana Conrado (8633512800); Gonçalves-Esteves, Vania (23011824700); Barbieri Ferreira Mendonça, Cláudia (55407444800)

57214895366; 56195397800; 8633512800; 23011824700; 55407444800

Palynotaxonomy of Neotropical species of Dioscorea L. (Dioscoreaceae)

10.1080/01916122.2019.1690067

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079441154&doi=10.1080%2f01916122.2019.1690067&partnerID=40&md5=d2ed43dcadbb976caeafe2efb84a97af

Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Horto Botânico, Universidade Federal do Rio de Janeiro, São Cristóvão, Brazil; Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa; Instituto de Biologia, Departamento de Botânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

Alzer F.D.C., Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Horto Botânico, Universidade Federal do Rio de Janeiro, São Cristóvão, Brazil; Couto R.S., Department of Biological Sciences, University of Cape Town, Rondebosch, South Africa; Lopes R.C., Instituto de Biologia, Departamento de Botânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Gonçalves-Esteves V., Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Horto Botânico, Universidade Federal do Rio de Janeiro, São Cristóvão, Brazil; Barbieri Ferreira Mendonça C., Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Horto Botânico, Universidade Federal do Rio de Janeiro, São Cristóvão, Brazil

Nineteen Neotropical species of the genus Dioscorea L. were subjected to palynological analysis with the objectives of increasing palynological knowledge and identifying characteristics with taxonomic and phylogenetic value. More specifically, the aim was to identify characters that distinguish species and help to resolve relationships among New World clades (i.e. clades NW I, NW II and NW III). Botanical material was obtained from exsiccates deposited in various herbaria. Pollen grains were treated by lactic acetolysis, measured, described, photomicrographed and submitted to statistical analysis. Non-acetolyzed pollen grains were deposited on carbon tape for scanning electron microscopy analysis. The results separate species of Dioscorea into six pollen types based on sexine ornamentation: reticulate, perforate, microreticulate, vermiculate, rugulate and spiculate. The pollen grains of species of Dioscorea are characterized by having monosulcate and disulcate apertures, sometimes in the same specimen (e.g. D. anomala, D. campestris and D. glandulosa). Traditionally accepted taxonomic sections of Dioscorea were not corroborated. Reassessment of established subgenera awaits a better understanding and recognition of phylogenetic lineages. © 2019 AASP–The Palynological Society.

Brazil; disulcate; monosulcate; multivariate analysis; palynology

Dioscorea; Dioscoreaceae; biostratigraphy; knowledge; Neotropical Region; ornamentation; paleobotany; palynology; phylogenetics; taxonomy

C. Barbieri Ferreira Mendonça; Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Horto Botânico, CBFM–Universidade Federal do Rio de Janeiro, São Cristóvão, Quinta da Boa Vista, 20940-040, Brazil; email: cb.mendonca@gmail.com

Bellwether Publishing, Ltd.

2-s2.0-85079441154

Pereira R.; Lima F.J.D.; Simbras F.M.; Bittar S.M.B.; Kellner A.W.A.; Saraiva A.Á.F.; Bantim R.A.M.; Sayão J.M.; Oliveira G.R.

Pereira, Ricardo (24766732200); Lima, Flaviana Jorge de (56481285700); Simbras, Felipe M. (55318730300); Bittar, Sheila Maria Bretas (23110008500); Kellner, Alexander Wilhelm Armin (7006207027); Saraiva, Antônio Álamo F. (29567569800); Bantim, Renan A.M. (51161111400); Sayão, Juliana M. (6507916910); Oliveira, Gustavo R. (57201211491)

24766732200; 56481285700; 55318730300; 23110008500; 7006207027; 29567569800; 51161111400; 6507916910; 57201211491

Biomarker signatures of Cretaceous Gondwana amber from Ipubi Formation (Araripe Basin, Brazil) and their palaeobotanical significance

Journal of South American Earth Sciences

10.1016/j.jsames.2019.102413

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075628941&doi=10.1016%2fj.jsames.2019.102413&partnerID=40&md5=fc81249fc63947e8823b00c46171682e

Universidade Federal de Pernambuco, Centro de Tecnologia e Geociências, Departamento de Geologia, Recife, CEP 50.740–550, Pernambuco State, Brazil; Universidade Regional do Cariri, Departamento de Ciências Biológicas, Laboratório de Paleontologia da URCA, Rua Coronel Antônio Luís, 1161, Pimenta, Crato, CEP: 63105–000, Ceará State, Brazil; Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia & Sistemática, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Recife, Pernambuco State, Brazil; Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Recife, Pernambuco State, Brazil; Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratory of Systematics and Taphonomy of Fossil Vertebrates, CEP 20940-040, Brazil; Universidade Federal de Pernambuco, Laboratório de Paleobiologia e Microestruturas, Rua do Alto Reservatório, s/n, Bela Vista, Vitória de Santo Antão, Pernambuco State, Brazil

Pereira R., Universidade Federal de Pernambuco, Centro de Tecnologia e Geociências, Departamento de Geologia, Recife, CEP 50.740–550, Pernambuco State, Brazil; Lima F.J.D., Universidade Regional do Cariri, Departamento de Ciências Biológicas, Laboratório de Paleontologia da URCA, Rua Coronel Antônio Luís, 1161, Pimenta, Crato, CEP: 63105–000, Ceará State, Brazil; Simbras F.M., Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia & Sistemática, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Recife, Pernambuco State, Brazil; Bittar S.M.B., Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Recife, Pernambuco State, Brazil; Kellner A.W.A., Museu Nacional/Universidade Federal do Rio de Janeiro, Departamento de Geologia e Paleontologia, Laboratory of Systematics and Taphonomy of Fossil Vertebrates, CEP 20940-040, Brazil; Saraiva A.Á.F., Universidade Regional do Cariri, Departamento de Ciências Biológicas, Laboratório de Paleontologia da URCA, Rua Coronel Antônio Luís, 1161, Pimenta, Crato, CEP: 63105–000, Ceará State, Brazil; Bantim R.A.M., Universidade Regional do Cariri, Departamento de Ciências Biológicas, Laboratório de Paleontologia da URCA, Rua Coronel Antônio Luís, 1161, Pimenta, Crato, CEP: 63105–000, Ceará State, Brazil; Sayão J.M., Universidade Federal de Pernambuco, Laboratório de Paleobiologia e Microestruturas, Rua do Alto Reservatório, s/n, Bela Vista, Vitória de Santo Antão, Pernambuco State, Brazil; Oliveira G.R., Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia & Sistemática, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Recife, Pernambuco State, Brazil

An amber (UFRPE 5037), from the black shales of the Ipubi Formation, Araripe Basin (Brazil), has been analyzed to understand its organic geochemical characteristics and possible botanical source using gas chromatography–mass spectrometry (GC–MS). The analyses carried out detected monoterpenes, hydrocarbonic sesquiterpenes, and aliphatic diterpanes like abietanes and norabietanes, as well as aromatic diterpanes such as simonellite, norsimonellite, retene, hinokiol, ferruginol and dehydroabietic acid. Such a combination of components is mainly known to have originated from gymnosperms. The individual identification of diterpenoids allowed the suggestion of Cheirolepidiaceae or Podocarpaceae families as possible amber producers, pointing to a flora similar to the underlying Crato Formation. Therefore, UFRPE 5037 consists on the first amber record in the Ipubi Formation, allowing the acquisition of important information regarding the botanical sources associated to new Brazilian amber occurrence described here. © 2019 Elsevier Ltd

Amber; Cretaceous; GC; Gymnosperms; Ipubi Formation; Terpenoids

Araripe Basin; Brazil; Cheirolepidiaceae; Gymnospermae; Podocarpaceae; amber; biomarker; Cretaceous; Gondwana; gymnosperm; paleobotany

G.R. Oliveira; Universidade Federal Rural de Pernambuco, Departamento de Biologia, Laboratório de Paleontologia & Sistemática, Recife, Rua Dom Manuel de Medeiros s/n Dois Irmãos, Brazil; email: gustavoliveira@gmail.com

J. South Am. Earth Sci.

2-s2.0-85075628941

Candeiro C.R.A.; Brusatte S.L.; Souza G.K.Q.; de Carvalho A.A.; Maia D.S.; Dias T.D.C.; Vidal L.D.S.; Gomes M.M.N.; Barros L.M.

Candeiro, Carlos Roberto Dos Anjos (9044446700); Brusatte, Stephen Louis (18233445200); Souza, Glayce Kelly de Queiroz (57221932174); de Carvalho, Adelino Adilson (57221944191); Maia, Débora Santos (57221928074); Dias, Tamires Do Carmo (57221940924); Vidal, Luciano da Silva (57203536442); Gomes, Musa Maria Nogueira (57221929421); Barros, Lucas Marques (57221931055)

9044446700; 18233445200; 57221932174; 57221944191; 57221928074; 57221940924; 57203536442; 57221929421; 57221931055

Late cretaceous bauru group biota from southern Goiás State, Brazil: History and fossil content; [Biota del grupo bauru del cretácico tardío del estado de Goiás Sur, Brasil: Historia y contenido fósil]

Earth Sciences Research Journal

10.15446/esrj.v24n4.82831

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100608253&doi=10.15446%2fesrj.v24n4.82831&partnerID=40&md5=7d063a594c42c7ad12fa70bca8629913

Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil; Universidade Federal de Goiás, Programa de Pós-Graduação em Biodiversidade Animal, Brazil; University of Edinburgh, School of Geoscience, United Kingdom; Universidade Federal de Goiás, Museu Antropológico, Brazil; Universidade Federal do Rio de Janeiro, Instituto de Geociências, Brazil

Candeiro C.R.A., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil, Universidade Federal de Goiás, Programa de Pós-Graduação em Biodiversidade Animal, Brazil; Brusatte S.L., University of Edinburgh, School of Geoscience, United Kingdom; Souza G.K.Q., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil; de Carvalho A.A., Universidade Federal de Goiás, Museu Antropológico, Brazil; Maia D.S., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil; Dias T.D.C., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil, Universidade Federal de Goiás, Programa de Pós-Graduação em Biodiversidade Animal, Brazil; Vidal L.D.S., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil, Universidade Federal do Rio de Janeiro, Instituto de Geociências, Brazil; Gomes M.M.N., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil; Barros L.M., Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil

The southern Goiás state region of Central Brazil has an extensive and informative record of fossil biota. Particularly over the last five years, there has been a great increase in fossil finds, which has enabled a greater understanding of this region's fauna and flora during the Late Cretaceous. In this article, we provide an updated synthesis of the biota from the Cretaceous of the southern Goiás state, the record of plants, gastropods, turtles, crocodilians, titanosaurs, and theropod dinosaurs. © 2020, Universidad Nacional de Colombia. All rights reserved.

Bauru Group; Biota; Exploration; Late Cretaceous; Southern Goiás

Brazil; Goias; Crocodylidae (all crocodiles); Dinosauria; Gastropoda; Testudines; biostratigraphy; biota; Cretaceous; dinosaur; fauna; flora; fossil record; gastropod; paleobiogeography; paleobotany; turtle

C.R.A. Candeiro; Universidade Federal de Goiás, Curso de Geologia, Laboratório de Paleontologia e Evolução, Brazil; email: candeiro@ufg.br; C.R.A. Candeiro; Universidade Federal de Goiás, Programa de Pós-Graduação em Biodiversidade Animal, Brazil; email: candeiro@ufg.br

Universidad Nacional de Colombia

All Open Access; Gold Open Access

2-s2.0-85100608253

Gomes B.T.; Absy M.L.; D’Apolito C.; Jaramillo C.; Almeida R.

Gomes, Bianca Tacoronte (57222496920); Absy, Maria Lúcia (6603106546); D’Apolito, Carlos (57214314546); Jaramillo, Carlos (57207890757); Almeida, Ronaldo (7102385905)

57222496920; 6603106546; 57214314546; 57207890757; 7102385905

Compositional and diversity comparisons between the palynological records of the Neogene (Solimões Formation) and Holocene sediments of Western Amazonia

10.1080/01916122.2019.1692314

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078621304&doi=10.1080%2f01916122.2019.1692314&partnerID=40&md5=853bc5db3dd86a3d8aa930629c6f5da2

Instituto Nacional de Pesquisas da Amazônia (INPA), Aleixo, Brazil; Faculdade de Geociências (FAGEO)–Universidade Federal do Mato Grosso (UFMT, Cuiabá, Brazil; Smithsonian Tropical Research Institute, Balboa, Ancon, Panama; ISEM, U. Montpellier, CNRS, EPHE, IRD, Montpellier, France; Instituto de Natureza e Cultura (INC), Universidade Federal do Amazonas (UFAM), Benjamin Constant-AM, Colônia, Brazil; Departamento Acadêmico de Ciências Sociais e Ambientais, Universidade Federal de Rondônia, Brazil

Gomes B.T., Instituto Nacional de Pesquisas da Amazônia (INPA), Aleixo, Brazil; Absy M.L., Instituto Nacional de Pesquisas da Amazônia (INPA), Aleixo, Brazil; D’Apolito C., Faculdade de Geociências (FAGEO)–Universidade Federal do Mato Grosso (UFMT, Cuiabá, Brazil; Jaramillo C., Smithsonian Tropical Research Institute, Balboa, Ancon, Panama, ISEM, U. Montpellier, CNRS, EPHE, IRD, Montpellier, France; Almeida R., Instituto de Natureza e Cultura (INC), Universidade Federal do Amazonas (UFAM), Benjamin Constant-AM, Colônia, Brazil, Departamento Acadêmico de Ciências Sociais e Ambientais, Universidade Federal de Rondônia, Brazil

Western Amazonia underwent dramatic changes in its landscape and environments during the Neogene, which led to its extant, hyperdiverse, tropical rainforest. Although the palynological fossil record has been the most useful proxy for understanding the history of the Amazonian biome, the floristic composition and diversity of the Neogene and the present Amazonian environments have never been thoroughly compared. In this work, we present preliminary comparisons of the pollen content of a Miocene core from the Solimões Formation in western Amazonia (Brazil) with the pollen content of Holocene sediments from flooded environments (várzeas and lake margins) near the Miocene site. We found a total of 463 pollen and spore types (Miocene, n = 284; Holocene, n = 231), only 52 of which were shared. The Holocene flooding environments displayed distinct palynological signals; both the Holocene and Miocene palynofloras have pollen primarily sourced from the local, flooded environments, with no significant differences in within-sample pollen diversity. The Holocene palynoflora was more heterogeneous in composition than the Miocene palynoflora, probably because the Miocene wetlands (the Pebas System) were highly homogeneous at a continental scale, far more than modern western Amazonia, thus implying that the spatial vegetation turnover was much lower than in modern ecosystems. © 2020 AASP–The Palynological Society.

Amazonia; floristic diversity; Holocene; Miocene; palynology; Solimões Formation

Amazonia; Brazil; biostratigraphy; fossil record; Holocene; micropaleontology; Miocene; Neogene; paleobiogeography; paleobotany; palynology; species diversity

B.T. Gomes; Instituto Nacional de Pesquisas da Amazônia (INPA), Brazil; email: biancatgomes@hotmail.com

Bellwether Publishing, Ltd.

2-s2.0-85078621304

Guerra-Sommer M.; Degani-Schmidt I.; Mendonça J.O.; Mendonça Filho J.G.; Lopes F.D.S.; Salgado-Campos V.M.J.; Araújo B.; Carvalho I.S.

Guerra-Sommer, Margot (6602534370); Degani-Schmidt, Isabela (55331051000); Mendonça, Joalice O. (36662356400); Mendonça Filho, João Graciano (12766481400); Lopes, Fernando Danúbio S. (57226653204); Salgado-Campos, Victor Matheus Joaquim (57220131253); Araújo, Bruno (56709396900); Carvalho, Ismar S. (9333156000)

6602534370; 55331051000; 36662356400; 12766481400; 57226653204; 57220131253; 56709396900; 9333156000

Multidisciplinary approach as a key for paleoenvironmental interpretation in a Weichselia-dominant interval from the late Aptian Codó Formation (Parnaíba Basin, Brazil)

Journal of South American Earth Sciences

10.1016/j.jsames.2021.103490

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112217927&doi=10.1016%2fj.jsames.2021.103490&partnerID=40&md5=c511701156e2168f894c0470f12317fa

Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, RS, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, LAFO - Laboratório de Palinofácies e Fácies Orgânica, Av. Athos da Silveira Ramos 274, Sala J1-20, Rio de Janeiro, 21941-916, RJ, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, Laboratório de Micropaleontologia Aplicada (MicrA), Av. Athos da Silveira Ramos 274, sala J2-16, Rio de Janeiro, 21941-916, RJ, Brazil; Centro de Tecnologia Mineral, Coordenação de Análises Minerais, Setor de Caracterização Mineralógica, Av. Pedro Calmon, 900, Rio de Janeiro, 21941-908, RJ, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, LAGESED - Laboratório de Geologia Sedimentar, Av. Athos da Silveira Ramos, 274, Sala J1-11, Rio de Janeiro, 21941-916, RJ, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, Cidade Universitária, Av. Athos da Silveira Ramos, 274, Bloco J1, Rio de Janeiro, 21941-916, RJ, Brazil; Universidade de Coimbra, Centro de Geociências, Rua Silvio Lima, 3030-790, Portugal

Guerra-Sommer M., Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, RS, Brazil; Degani-Schmidt I., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil; Mendonça J.O., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, LAFO - Laboratório de Palinofácies e Fácies Orgânica, Av. Athos da Silveira Ramos 274, Sala J1-20, Rio de Janeiro, 21941-916, RJ, Brazil; Mendonça Filho J.G., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, LAFO - Laboratório de Palinofácies e Fácies Orgânica, Av. Athos da Silveira Ramos 274, Sala J1-20, Rio de Janeiro, 21941-916, RJ, Brazil; Lopes F.D.S., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, Laboratório de Micropaleontologia Aplicada (MicrA), Av. Athos da Silveira Ramos 274, sala J2-16, Rio de Janeiro, 21941-916, RJ, Brazil; Salgado-Campos V.M.J., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil, Centro de Tecnologia Mineral, Coordenação de Análises Minerais, Setor de Caracterização Mineralógica, Av. Pedro Calmon, 900, Rio de Janeiro, 21941-908, RJ, Brazil; Araújo B., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, LAGESED - Laboratório de Geologia Sedimentar, Av. Athos da Silveira Ramos, 274, Sala J1-11, Rio de Janeiro, 21941-916, RJ, Brazil; Carvalho I.S., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Dept. Geologia, Cidade Universitária, Av. Athos da Silveira Ramos, 274, Bloco J1, Rio de Janeiro, 21941-916, RJ, Brazil, Universidade de Coimbra, Centro de Geociências, Rua Silvio Lima, 3030-790, Portugal

The presence of the fern Weichselia in a restricted sedimentary interval of a drilling core in the Parnaíba Basin (Brazil) was used as a lead for paleoenvironmental interpretation integrating paleobotanical, palynofacies, palynological, organic petrography and clay mineralogy analyses. The fern paleobiogeography was amplified and its association with terrestrial bryophyte gametophytes (Muscites) indicated depositional conditions corresponding to marginal areas of freshwater bodies subjected to frequent flooding under the general fluvial-deltaic conditions so far accepted for the intermediary portion of the Codó Formation. The high dominance of non-opaque phytoclasts and very scarce autochthonous non-marine palynomorphs pointed to a shallow water body linked to marginal areas of fluvial systems in the river outlets, channel margins in estuarine systems, and/or shallow floodplain lakes connected/open to fluvial canals. The very scarce marine palynomorphs (dinoflagellate cysts) suggest a limited influence from unstable environments on coastal margins or estuarine canals. The terrestrial vegetation surrounding the depositional setting, deciphered by palynological analysis, reflected distinct environmental conditions prevailing simultaneously in 1) humid areas dominated by fern communities, and 2) dry-xerophytic areas dominated mainly by Araucariaceae and Cheirolepidiaceae gymnosperms, both as components of a wider Aptian paleoenvironment within the periequatorial latitudes in South America. The results were supported by clay mineralogy that showed abundance of detrital kaolinite over montmorillonite and suggest the dominance of a climatic humidification process and a less expressive semiarid climate in a regional context. © 2021 Elsevier Ltd

Early Cretaceous; Ferns; Mosses; Paleobiogeography

Brazil; Parnaiba Basin; Araucariaceae; Bryophyta; bryophytes; Cheirolepidiaceae; Dinophyceae; Gymnospermae; Aptian; Cretaceous; fern; moss; paleobiogeography; paleobotany; paleoenvironment; palynology

M. Guerra-Sommer; Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Porto Alegre, Av. Bento Gonçalves 9500, 91509-900, Brazil; email: margot.sommer@ufrgs.br

J. South Am. Earth Sci.

2-s2.0-85112217927

Santos Â.C.S.; Siegloch A.M.; Guerra-Sommer M.; Degani-Schmidt I.; Carvalho I.

Santos, Ângela Cristine Scaramuzza (57217679300); Siegloch, Anelise Marta (56374376400); Guerra-Sommer, Margot (6602534370); Degani-Schmidt, Isabela (55331051000); Carvalho, Ismar (9333156000)

57217679300; 56374376400; 6602534370; 55331051000; 9333156000

Agathoxylon santanensis sp. nov. from the Aptian Crato fossil Lagerstätte, Santana Formation, Araripe Basin, Brazil

Journal of South American Earth Sciences

10.1016/j.jsames.2021.103633

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119140785&doi=10.1016%2fj.jsames.2021.103633&partnerID=40&md5=3196ec35b5e20de822740bebe28ea904

Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil; Centro de Geociências, Universidade de Coimbra, Rua Sílvio Lima, 3030-790, Portugal

Santos Â.C.S., Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Siegloch A.M., Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Guerra-Sommer M., Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Degani-Schmidt I., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil; Carvalho I., Universidade Federal do Rio de Janeiro, CCMN/IGEO, Programa de Pós-Graduação em Geologia, Av. Athos da Silveira Ramos 274, Bloco J1, Cidade Universitária, Rio de Janeiro, 21941-916, RJ, Brazil, Centro de Geociências, Universidade de Coimbra, Rua Sílvio Lima, 3030-790, Portugal

The study of a petrified twig under high-resolution optical microscopy allowed for the first formal record of the morphogenus Agathoxylon for the late Aptian Crato Member (Santana Formation, Araripe Basin, northeastern Brazil) and the description of a new species, Agathoxylon santanensis. The wood is characterized by mostly (95%) araucarian triseriate alternate bordered pits with hexagonal boundaries in a compact arrangement, and cross-field pits with araucarioid organization. In addition to Agathoxyon-type of xylem, the preservation of a belt of stone cells and axial resin ducts in the non-functional phloem, and an attached leaf with parallel venation showing longitudinally oriented stomata point to a probable Araucariaceae affinity. The presence of Agathoxylon xylem associated with phloem of Araucariaceae affinity in the Tropical-Equatorial Hot Arid belt indicate that the parent plants survived in different climatic zones in the Early Cretaceous of Western Gondwana, from periequatorial to warm and cool-temperate belts. The general growth pattern suggests that the growth interruptions zones were caused by temporary water stress, which was the limiting factor for favorable growing. © 2021

Araucariaceae affinity; Bark; Conifer wood anatomy; Late Aptian; Wood growth pattern

Araripe Basin; Brazil; Agathoxylon; Araucariaceae; Coniferophyta; anatomy; Aptian; coniferous tree; fossil; growth; lagerstatte; new species; paleobotany

M. Guerra-Sommer; Universidade Federal do Rio Grande do Sul, IGEO, Programa de Pós-Graduação em Geociências, Porto Alegre, Av. Bento Gonçalves 9500, 91509-900, Brazil; email: margot.sommer@ufrgs.br

J. South Am. Earth Sci.

2-s2.0-85119140785

Rodrigues I.D.; Absy M.L.; da Silva-Caminha S.A.F.; Gonçalves-Esteves V.; Mendonça C.B.F.; Ferreira M.G.; Moura C.O.

Rodrigues, Isabella Dessaune (55799293200); Absy, Maria Lúcia (6603106546); da Silva-Caminha, Silane Aparecida F. (35755450800); Gonçalves-Esteves, Vania (23011824700); Mendonça, Claudia Barbieri Ferreira (55407444800); Ferreira, Marcos Gonçalves (36238829300); Moura, Cleonice de Oliveira (57190953283)

55799293200; 6603106546; 35755450800; 23011824700; 55407444800; 36238829300; 57190953283

Pollen morphology of 25 species in the family Apocynaceae from the Adolpho Ducke Forest Reserve, Amazonas, Brazil

10.1080/01916122.2016.1146173

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84984698458&doi=10.1080%2f01916122.2016.1146173&partnerID=40&md5=a2ed1e49f028ee713583bd2dcd6ba8fb

Instituto de Ciências Biológicas, Laboratório de Botânica, Universidade Federal do Amazonas, Av. General Rodrigo Octávio J. Ramos, 6200, Japiim, Manaus, 69077000, Amazonas, Brazil; Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Av. André Araujo, 2936, Bairro Petrópolis, Manaus, 69067-375, Amazonas, Brazil; Departamento de Geologia Geral, Laboratório de Paleontologia e Palinologia, Universidade Federal de Mato Grosso (UFMT), Av. Fernando Corrêa da Costa, 2367, Boa Esperança, Cuiabá, CEP:78060-900, MT, Brazil; Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil

Rodrigues I.D., Instituto de Ciências Biológicas, Laboratório de Botânica, Universidade Federal do Amazonas, Av. General Rodrigo Octávio J. Ramos, 6200, Japiim, Manaus, 69077000, Amazonas, Brazil; Absy M.L., Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Av. André Araujo, 2936, Bairro Petrópolis, Manaus, 69067-375, Amazonas, Brazil; da Silva-Caminha S.A.F., Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Av. André Araujo, 2936, Bairro Petrópolis, Manaus, 69067-375, Amazonas, Brazil, Departamento de Geologia Geral, Laboratório de Paleontologia e Palinologia, Universidade Federal de Mato Grosso (UFMT), Av. Fernando Corrêa da Costa, 2367, Boa Esperança, Cuiabá, CEP:78060-900, MT, Brazil; Gonçalves-Esteves V., Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Mendonça C.B.F., Departamento de Botânica, Laboratório de Palinologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Ferreira M.G., Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Av. André Araujo, 2936, Bairro Petrópolis, Manaus, 69067-375, Amazonas, Brazil; Moura C.O., Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Av. André Araujo, 2936, Bairro Petrópolis, Manaus, 69067-375, Amazonas, Brazil

The Apocynaceae family consists of approximately 4555 species worldwide, distributed among 415 genera. In Brazil, this family is represented by 90 genera and 850 species. The Adolpho Ducke Forest Reserve, part of the Instituto Nacional de Pesquisas da Amazônia (INPA) since 1963, comprises 100 km2 of non-isolated continuous primary forest, and 40 species and 16 genera of Apocynaceae have been recorded in this area. Pollen grains, collected from flower buds and/or flowers of voucher specimens deposited at the INPA Herbarium collection, were processed using the acetolysis method, and measured, described and photographed by light microscopy and scanning electron microscopy. The study included 25 Apocynaceae species distributed among 14 genera. The pollen grains were porate to colporate, with exine ornamentation varying from psilate or scabrate to microreticulate. Other morphological characteristics were pores with granules at the base of the annulus in Odontadenia, a distinct margo forming arches around the colpus in Geissospermum, and the presence of a thick endocingulum in the equatorial region in species of Tabernaemontana. © 2016 AASP–The Palynological Society.

Amazon; Apocynaceae; Brazil; Ducke Reserve; pollen morphology

Amazonas [Brazil]; Amazonia; Brazil; Brazil; Ducke Reserve; Apocynaceae; Geissospermum; Nia; Odontadenia; Tabernaemontana; angiosperm; morphology; paleobotany; paleoecology; palynology; photogrammetry; pollen

M.L. Absy; Instituto Nacional de Pesquisas da Amazônia (INPA), Coordenação de Pesquisas em Biodiversidade, Laboratório de Palinologia, Manaus, Av. André Araujo, 2936, Bairro Petrópolis, 69067-375, Brazil; email: lucia.absy@gmail.com

Taylor and Francis Inc.

2-s2.0-84984698458

Degani-Schmidt I.; Guerra-Sommer M.

Degani-Schmidt, Isabela (55331051000); Guerra-Sommer, Margot (6602534370)

55331051000; 6602534370

Epidermal morphology and ecological significance of Glossopteris pubescens nom. nov. from the Brazilian Permian (Sakmarian)

Review of Palaeobotany and Palynology

10.1016/j.revpalbo.2016.06.002

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975496030&doi=10.1016%2fj.revpalbo.2016.06.002&partnerID=40&md5=0ce8c9c67c66e4f7249f70542c8c0c2d

UFRGS, Porto Alegre, Brazil; Instituto de Geociências, UFRGS, Porto Alegre, Brazil

Degani-Schmidt I., UFRGS, Porto Alegre, Brazil; Guerra-Sommer M., Instituto de Geociências, UFRGS, Porto Alegre, Brazil

A Brazilian glossopterid species is reassigned and redescribed based on cuticular analysis. The original name (Guerra-Sommer, 1992) is illegitimate because it is a later homonym of Glossopteris papillosa Srivastava (1969). Thus, the new name Glossopteris pubescens is erected as a replacement for G. papillosa Guerra-Sommer. The leaf adpressions come from a tonstein layer within a Sakmarian coal seam (U/Pb age 291 ± 1.3 Ma) of the Faxinal Coalfield, southern Paraná Basin, Brazil (Rio Bonito Formation). Leaf fragments macerated in Schulze's solution yielded larger cuticle fragments than those previously described, totaling over 100 analyzed leaves. The unique ornamentation of the lower side of the lamina comprises simple trichomes and trichome base complexes densely concentrated on the venation system. These epidermal structures are interpreted under the light of new paleoecological data for the Faxinal Coalfield which include humidity oscillations, wildfire occurrences and influence of volcanic activity. These paleoenvironmental factors are suggested to have played a main role in the development of the xeromorphic cuticle structures which possibly had a multitask function during both dry and wet cycles, mainly as protection of stomata against excessive humidity and air dust. © 2016 Elsevier B.V.

Fossil cuticles; Glossopteris Flora; Gondwana; Permian; Pteridosperms; Trichome base complex

Brazil; Parana Basin; Glossopteris; Katsuwonus pelamis; coal seam; cuticle; fern; fossil record; leaf morphology; morphology; nomenclature; ornamentation; paleobotany; paleoecology; paleoenvironment; Permian; trichome

I. Degani-Schmidt; PPG-Geo, UFRGS, Porto Alegre, RS, Av. Bento Gonçalves 9500, Cx.P. 15001, 91501-970, Brazil; email: degani.schmidt@ufrgs.br

Rev. Palaeobot. Palynol.

2-s2.0-84975496030

Semeler A.R.; Sommer M.G.

Semeler, Alexandre Ribas (57193005703); Sommer, Margot Guerra (59229532400)

57193005703; 59229532400

RESEARCH DATA IN PALEOBOTANY: PETROGRAPHIC THIN SECTIONS FOSSIL WOOD DATASET; [Dados de pesquisa em paleobotânica: conjunto de dados petrográficos de lâminas delgadas de lenhos fósseis]

10.5007/1518-2924.2024.e95688/EN

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199264831&doi=10.5007%2f1518-2924.2024.e95688%2fEN&partnerID=40&md5=a76496e4ed1aaaf20250a2716a68ae54

Universidade Federal do Rio Grande do Sul, Instituto de Geociências, RS, Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, RS, Porto Alegre, Brazil

Semeler A.R., Universidade Federal do Rio Grande do Sul, Instituto de Geociências, RS, Porto Alegre, Brazil; Sommer M.G., Universidade Federal do Rio Grande do Sul, RS, Porto Alegre, Brazil

Objective: This study was aimed at analyzing and disseminating the fossil wood collection data stored in the thin sections of the paleobotany collection of the Department of Paleontology and Stratigraphy of the Institute of Geosciences at the Federal University of Rio Grande do Sul. Thin sections of petrified wood are described. Research data used in geosciences specifically seek to develop a model for the use of this type of sheet in paleobotany, enabling visualization of its representativeness in studies published over 40 years to obtain the anatomical characteristics of fossil woods and define their systematic affinities as a specific typology of research data in geosciences. Methods: The methodology involved interviewing a paleobotanical specialist and using different techniques applied in metric studies to map scientific production in petrified wood. Thus, a dataset of (20) thin slide sections of petrified fossil wood used in “Stressing environmental conditions in the ‘petrified forest’ from the Mata Sequence in the Triassic context of the Paraná Basin,” a paper published by the Journal of South American Earth Sciences (DOI:10.1016/j.jsames.2023.104415), was used. Depending on the methodology, these thin sections petrified wood can reveal systematic paleoclimatic signatures based on the anatomical characteristics of the fossil wood. In addition to this case study, which represents a collection of more than (2.000) thousand blades of fossil wood and approximately 40 years of research, the paleobotanical collection of the department is reused in methodology classes. The collection comprises a database created by research physicists that provides information on anatomical features, systematic affinities, paleoclimatic conditions, and paleoenvironmental insights. Potential for reuse: The reuse, registration, storage, identification, and preservation of thin sections as a type of research data used in paleobotany aims to improve the methodology associated with the organization of the physical database of the institution. The research data and blades of fossil wood are being digitized. They will soon be available under CC BY 4.0, according to the sample described in this data paper (DOI Mendeley: 10.17632/b8phfcsync.3). Furthermore, the data can be reused in optical and electronic scanning microscopy software. © 2024, Universidade Federal de Santa Catarina. All rights reserved.

Fossil woods; Palaeoxylology; Petrographic thin sections; Physical database; Research data in geosciences

Universidade Federal de Santa Catarina

2-s2.0-85199264831

Martins A.K.; Kerkhoff M.L.H.; Dutra T.L.; Horodyski R.S.; Kochhann K.G.D.; Pacheco M.L.A.F.

Martins, Alisson K. (57964227500); Kerkhoff, Marta L. H. (57963313700); Dutra, Tânia L. (55983008300); Horodyski, Rodrigo S. (36144154400); Kochhann, Karlos G. D. (37039716800); Pacheco, Mírian L. A. Forancelli (55311752500)

57964227500; 57963313700; 55983008300; 36144154400; 37039716800; 55311752500

Exceptional preservation of Triassic-Jurassic fossil plants: integrating biosignatures and fossil diagenesis to understand microbial-related iron dynamics

10.18261/let.55.3.4

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85141828254&doi=10.18261%2flet.55.3.4&partnerID=40&md5=26f25e7b916e9781b721fc656b2f70bf

UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Departamento de Biologia (UFSCar-Campus Sorocaba); Departamento de Física Nuclear, Instituto de Física (IF-USP)-Rodovia João Leme dos Santos, (SP-264), Km 110, s/n-Itinga, SP, Sorocaba, 18052-780, Brazil; Butantã, SP, São Paulo, 05508-090, Brazil

Martins A.K., UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Kerkhoff M.L.H., UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Dutra T.L., UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Horodyski R.S., UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Kochhann K.G.D., UNISINOS University, Av. Unisinos, 950, Cristo Rei, RS, São Leopoldo, 93022-750, Brazil; Pacheco M.L.A.F., Departamento de Biologia (UFSCar-Campus Sorocaba); Departamento de Física Nuclear, Instituto de Física (IF-USP)-Rodovia João Leme dos Santos, (SP-264), Km 110, s/n-Itinga, SP, Sorocaba, 18052-780, Brazil, Butantã, SP, São Paulo, 05508-090, Brazil

Studying exceptionally well-preserved biotas can bring significant answers to the rela-tionship between micro-organisms, biosignatures, and preservational processes. Among impressions of plants from Triassic and Jurassic beds of southernmost Brazil, there are branches and leaves coated by iron crusts, attributed to the precipitation of iron oxide-oxyhydroxides. Underneath the crusts, the leaves retained minute anatomical features of their epidermal cells and stomatal complexes, which are rare in other types of preservation. We evaluate the chemical nature and microstructure of these crusts to solve their genesis and the role of micro-organisms in the precipitation of iron miner-als. For this purpose, we apply the following analytical geochemical techniques: Raman spectroscopy and Mössbauer spectrometry, X-ray diffraction (XRD), X-ray fluores-cence (XRF), scanning electron microscopy (SEM), and energy dispersive spectrome-try (EDS). The crusts are composed of α-goethite and traces of smectite. We identified potential biogenic microstructures such as ferrihydrite nodules, bacterial exudates morphologically compatible to extracellular polymeric substances (EPS), and structures like twisted stalks and sheaths that fit the biogenicity criteria established so far. These microstructures suggest that the iron crusts were produced by the activity of freshwater microaerophilic and neutrophilic organisms. The studied material allows us to reconstruct key diagenetic processes that facilitated authigenic preservation along with exceptionally well-preserved biosignatures. □ Mesozoic, plant fossils, iron oxyhydroxides, microbial activity, biogenic structures. © 2022 Author(s).

Brazil; diagenesis; fossil; Jurassic; microstructure; Mossbauer spectroscopy; paleobotany; preservation; Raman spectroscopy; scanning electron microscopy; Triassic; X-ray diffraction

Universitetsforlaget AS

2-s2.0-85141828254

da Conceição D.M.; de Andrade L.S.; Cisneros J.C.; Iannuzzi R.; Pereira A.A.; Machado F.C.

da Conceição, Domingas Maria (57189657696); de Andrade, Luiz Saturnino (56519509900); Cisneros, Juan Carlos (7005825015); Iannuzzi, Roberto (6603970107); Pereira, Agostinha Araújo (56670713000); Machado, Francisco Carlos (57189657778)

57189657696; 56519509900; 7005825015; 6603970107; 56670713000; 57189657778

New petrified forest in Maranhão, Permian (Cisuralian) of the Parnaíba Basin, Brazil

Journal of South American Earth Sciences

10.1016/j.jsames.2016.05.015

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973931565&doi=10.1016%2fj.jsames.2016.05.015&partnerID=40&md5=e9a5958268ba118e0188e4cbc79b54ad

Centro de Tecnologia e Geociências, UFPE, Av. Academico Helio Ramos, s/n Cidade Universitaria, Recife, PE, 50740-530, Brazil; Instituto de Geociências, UFPA, Rua Augusto Correa 1, Belém, PA, 66075-110, Brazil; Centro de Ciências da Natureza, UFPI, Ininga, Teresina, PI, 64049-550, Brazil; Departamento de Paleontologia e Estratigrafia, UFRGS, Avenida Bento Gonçalves 9.500, Porto Alegre, RS, 91501-970, Brazil; Centro de Pesquisa de História Natural e Arqueologia do Maranhão, CPHNAMA, Rua do Giz 59, Praia Grande, São Luís, MA, 65010-680, Brazil; Tecnologia e Meio Ambiente, UniEVANGÉLICA, Av. Universitária, Km 3, 5, CP 122 e 901, Anápolis, GO, 75070-290, Brazil; Associação Bacelarense de Proteção ao Meio Ambiente, Duque Bacelar, MA, Brazil

da Conceição D.M., Centro de Tecnologia e Geociências, UFPE, Av. Academico Helio Ramos, s/n Cidade Universitaria, Recife, PE, 50740-530, Brazil; de Andrade L.S., Instituto de Geociências, UFPA, Rua Augusto Correa 1, Belém, PA, 66075-110, Brazil; Cisneros J.C., Centro de Tecnologia e Geociências, UFPE, Av. Academico Helio Ramos, s/n Cidade Universitaria, Recife, PE, 50740-530, Brazil, Centro de Ciências da Natureza, UFPI, Ininga, Teresina, PI, 64049-550, Brazil; Iannuzzi R., Departamento de Paleontologia e Estratigrafia, UFRGS, Avenida Bento Gonçalves 9.500, Porto Alegre, RS, 91501-970, Brazil; Pereira A.A., Centro de Pesquisa de História Natural e Arqueologia do Maranhão, CPHNAMA, Rua do Giz 59, Praia Grande, São Luís, MA, 65010-680, Brazil; Machado F.C., Tecnologia e Meio Ambiente, UniEVANGÉLICA, Av. Universitária, Km 3, 5, CP 122 e 901, Anápolis, GO, 75070-290, Brazil, Associação Bacelarense de Proteção ao Meio Ambiente, Duque Bacelar, MA, Brazil

This work presents a new fossil plant-bearing area located in the municipalities of Duque Bacelar and Coelho Neto, Maranhão State, Brazil, recovered from lower Permian (Cisuralian) strata of the Pedra de Fogo Formation, northeastern portion of the Parnaíba Basin. The area comprises more than five exposures with assemblages formed mostly of large gymnosperm woods, a number of them in life-position (reaching up to ∼2.30 m in height and 1.15 m in diameter) and, in lesser degree, of horizontal tree-fern stems (up to 5 m in length), some of them being referable to Psaronius sp. The fossils are recorded in sedimentary beds of continental origin that accumulated in shallow, nearshore areas of large lakes, which eventually were affected by rapid burial episodes generated by non-channelized, high energy fluvial systems. The new fossil assemblages are included within lacustrine rocks placed at the base of the Pedra de Fogo Formation, i.e., Sílex Basal Member, near the contact with the underlying Piauí Formation (Pennsylvanian). This observation contrasts with previous studies at the southwestern portion of the basin, where the stratigraphic position of plant fossils is referred to the upper Pedra de Fogo Formation (Trisidela Member) or even to the overlying Motuca Formation. The new sites currently suffer damage from human activities and require urgent actions in order to protect them. Based on the current laws, some measures of protection for these sites are discussed and proposed herein. © 2016 Elsevier Ltd.

Fossil forest; Geoconservation; Gymnosperms; Parnaíba Basin; Pedra de Fogo Formation; Tree-ferns

Brazil; Maranhao; Parnaiba Basin; Filicophyta; Gymnospermae; burial (geology); fern; fossil assemblage; fossil record; gymnosperm; nature conservation; paleobotany; Permian

D.M. da Conceição; Centro de Tecnologia e Geociências, UFPE, Recife, PE, Av. Academico Helio Ramos, s/n Cidade Universitaria, 50740-530, Brazil; email: domingasmary@hotmail.com

J. South Am. Earth Sci.

2-s2.0-84973931565

Pinheiro E.R.S.; Gallego J.; Iannuzzi R.; Cúneo R.

Pinheiro, Esther R.S. (36182808500); Gallego, Julieta (56197134400); Iannuzzi, Roberto (6603970107); Cúneo, Rubén (37030596800)

36182808500; 56197134400; 6603970107; 37030596800

First report of feeding traces in Permian botrychiopsis leaves from western gondwana

10.2110/palo.2014.091

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84942310255&doi=10.2110%2fpalo.2014.091&partnerID=40&md5=ad69b4e5ec87318999620566d6408cf3

Laboratório de Paleobotânica, Departamento de Paleontologia e Estratigrafia, Universidade Federal Do Rio Grande Do sul, Av. Bento Gonçalves, Porto Alegre, Rio Grande do Sul, 9500, Brazil; Consejo de Investigaciones Científicas y Técnicas (CONICET), Museo Paleontológico Egidio Ferruglio, Avenida Fontana 140, Trelew, Chubut, Argentina

Pinheiro E.R.S., Laboratório de Paleobotânica, Departamento de Paleontologia e Estratigrafia, Universidade Federal Do Rio Grande Do sul, Av. Bento Gonçalves, Porto Alegre, Rio Grande do Sul, 9500, Brazil; Gallego J., Consejo de Investigaciones Científicas y Técnicas (CONICET), Museo Paleontológico Egidio Ferruglio, Avenida Fontana 140, Trelew, Chubut, Argentina; Iannuzzi R., Laboratório de Paleobotânica, Departamento de Paleontologia e Estratigrafia, Universidade Federal Do Rio Grande Do sul, Av. Bento Gonçalves, Porto Alegre, Rio Grande do Sul, 9500, Brazil; Cúneo R., Consejo de Investigaciones Científicas y Técnicas (CONICET), Museo Paleontológico Egidio Ferruglio, Avenida Fontana 140, Trelew, Chubut, Argentina

The genus Botrychiopsis consists of leaves with substantial heteromorphism, present in late Paleozoic Gondwanan floras. The genus is recorded in paleofloras from Australia, India, South Africa, Brazil, and Argentina, and occurs from the latest Mississippian to the early Permian. Here, we report and analyze the first record of plant-insect interactions found in the Botrychiopsis-type leaves from the basinal deposits of Permian Argentina and Brazil. The samples are from three different Permian deposits: Arroyo Totoral, Bajo de Véliz (Argentina), and Morro do Papaléo (Brazil). Evidence of insect-plant interactions was present in only eight of 154 specimens analyzed. We found evidence of margin and hole feeding damage made by insects. This represents the first evidence of plant-insect interactions in Botrychiopsis leaves from Permian Gondwanan deposits. The occurrence of herbivory only on the Permian species B. plantiana may indicate that consumption of these leaves began during this interval, not in the Carboniferous, as occurred with Cordaites leaves. © 2015, SEPM (Society for Sedimentary Geology).

Argentina; Australia; Brazil; India; South Africa; Hexapoda; coniferous tree; feeding; fern; Gondwana; herbivory; leaf; Mississippian; new record; paleobotany; Permian; pest damage; plant-insect interaction

SEPM Society for Sedimentary Geology

All Open Access; Green Open Access

2-s2.0-84942310255

Silva D.M.D.; Sylvestre L.D.S.; Mendonça C.B.F.; Gonçalves-Esteves V.

Silva, Dilma Melo da (57221969499); Sylvestre, Lana da Silva (25961178000); Mendonça, Cláudia Barbieri Ferreira (55407444800); Gonçalves-Esteves, Vania (23011824700)

57221969499; 25961178000; 55407444800; 23011824700

Palynology of selected species of Blechnaceae (Polypodiopsida: Polypodiales)

10.1080/01916122.2021.1872728

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100766911&doi=10.1080%2f01916122.2021.1872728&partnerID=40&md5=f9169071b32ce1c50109d2e7b31f1e96

Programa de Pós-graduação em Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Departamento de Botânica, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Departamento de Botânica, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, RJ, Brazil

Silva D.M.D., Programa de Pós-graduação em Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Sylvestre L.D.S., Departamento de Botânica, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Mendonça C.B.F., Departamento de Botânica, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, RJ, Brazil; Gonçalves-Esteves V., Departamento de Botânica, Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, RJ, Brazil

The Blechnaceae is a family of leptosporangiate ferns with a wide geographical distribution. Recent phylogenies revealed several lineages within the family, culminating in a classification system comprising 25 recognized genera grouped into three subfamilies. Spore surface morphology has major importance in the taxonomy of the group, but there is limited information on the relevance of other palynological characters. This study aimed to examine whether spore morphology aids in distinguishing genera of Blechnaceae according to the current phylogenetic classification. Spores from 28 species distributed in 12 genera of the subfamilies Blechnoideae, Stenochlaenoideae, and Woodwardioideae were examined. Specimens were acetolyzed, measured, described, and illustrated using light and scanning electron microscopy. The analyzed spores were medium to large in size, with a monolete scar of varied size, straight, and without margo. The perine was three-layered, except in the subfamily Stenochlaenoideae, which showed a single-layered perine. Blechnoideae was the most palynologically diverse subfamily. Woodwardioideae and Stenochlaenoideae spore characters had high diagnostic value for identification at the genus level. Austroblechnum and Blechnum showed high similarity; no single spore character could be used to discriminate between species of these genera. Blechnum anthracinum was the only species within its genus to exhibit cristate spores, with filaments and perforations. Morphometric analysis did not prove to be a useful tool for differentiating subfamilies or genera, possibly because of the influence of polyploid individuals. This investigation revealed unique spore characters for some genera and provided morphological descriptions that allow identification at the species level, contributing to the taxonomic study of Blechnaceae. © 2021 AASP–The Palynological Society.

Blechnoideae; leptosporangiate ferns; palynotaxonomy; Stenochlaenoideae; Woodwardioideae

Blechnaceae; Blechnum; Filicales; fern; morphology; paleobotany; paleoecology; palynology; phylogenetics; taxonomy

Taylor and Francis Ltd.

2-s2.0-85100766911

Keller H.A.; Liede-Schumann S.; Rapini A.; Cáceres Moral S.

Keller, Héctor A. (7403098541); Liede-Schumann, Sigrid (8582160300); Rapini, Alessandro (6602744173); Cáceres Moral, Sergio (56415113000)

7403098541; 8582160300; 6602744173; 56415113000

The genus ruehssia (apocynaceae) from argentina: Phylogeny, new combinations and new records; [El género ruehssia (Apocynaceae) en la argentina: filogenia, nuevas combinaciones y nuevos registros]

10.14522/darwiniana.2020.82.871

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098658045&doi=10.14522%2fdarwiniana.2020.82.871&partnerID=40&md5=388b89d9b52721733629fc51894cc9ce

Instituto de Botánica del Nordeste, Casilla de Correo 209, Corrientes, 3400, Argentina; University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95440, Germany; Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s/n, Novo Horizonte, Feira de Santana, 44036-900, Bahia, Brazil

Keller H.A., Instituto de Botánica del Nordeste, Casilla de Correo 209, Corrientes, 3400, Argentina; Liede-Schumann S., University of Bayreuth, Universitätsstrasse 30, Bayreuth, 95440, Germany; Rapini A., Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina s/n, Novo Horizonte, Feira de Santana, 44036-900, Bahia, Brazil; Cáceres Moral S., Instituto de Botánica del Nordeste, Casilla de Correo 209, Corrientes, 3400, Argentina

Ruehssia was recently reestablished to classify all American species of the tribe Marsdenieae. Here, we provide a revision of the genus in Argentina, with an identification key, comments, a distribution map, and images of all species. The phylogenetic position of all species has been assessed using chloroplast and nuclear DNA sequences. We recognize six species. Besides R. altissima and R. macrophylla, we include two new records, R. hilariana and R. brasiliensis, and propose two new combinations in the genus, R. castillonii (Lillo ex T. Mey.) H.A. Keller & Liede and R. tressensiae (S.A. Cáceres & Morillo) H.A. Keller & Liede. Ruehssia montana and R. ulei, previously reported to Argentina, do not occur in the country. © 2020, Instituto de Botanica Darwinion. All rights reserved.

Asclepiadoideae; Marsdenia; Marsdenieae; Taxonomy

Argentina; Apocynaceae; Asclepiadoideae; Marsdenia; Marsdenieae; chloroplast; DNA; new genus; new record; new species; paleobotany; phylogeny; taxonomy

H.A. Keller; Instituto de Botánica del Nordeste, Corrientes, Casilla de Correo 209, 3400, Argentina; email: kellerhector@hotmail.com

Instituto de Botanica Darwinion

All Open Access; Gold Open Access

2-s2.0-85098658045

Christiano-de-Souza I.C.; Ricardi-Branco F.S.

Christiano-de-Souza, Isabel Cortez (54892079700); Ricardi-Branco, Fresia Soledad (6508015390)

54892079700; 6508015390

Study of the west gondwana floras during the late paleozoic: A paleogeographic approach in the paraná basin - Brazil

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2015.02.023

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925395640&doi=10.1016%2fj.palaeo.2015.02.023&partnerID=40&md5=5e7a25cadd612edcff584bcac71081b9

Departamento de Geologia e Recursos Naturais, Instituto de Geociências, Universidade Estadual de Campinas, Department of Geology and Natural Resources, Institute of Geocience, State University of Campinas, Campinas - SP, 13083-970, Brazil

Christiano-de-Souza I.C., Departamento de Geologia e Recursos Naturais, Instituto de Geociências, Universidade Estadual de Campinas, Department of Geology and Natural Resources, Institute of Geocience, State University of Campinas, Campinas - SP, 13083-970, Brazil; Ricardi-Branco F.S., Departamento de Geologia e Recursos Naturais, Instituto de Geociências, Universidade Estadual de Campinas, Department of Geology and Natural Resources, Institute of Geocience, State University of Campinas, Campinas - SP, 13083-970, Brazil

The Late Paleozoic in West Gondwana was a period of significant climatic changes, ranging from a glacial climate in the Late Carboniferous to a semi-arid climate in the Late Permian. The Floristic Province of Gondwana in the Paraná Basin was directly affected by such changes, and underwent a transformation regarding composition and geographic distribution. Thus, the climatic phases were divided into three intervals: Phase A containing interglacially developed flora; Phase B, containing floras of immediate post-glacial temperate climates, and phase C, identified with floras related to the decline of dryness. Regarding their geographical distribution, the floras were concentrated in the far-northern and far-southern portions of the basin during the Glacial interval, and, with a gradual increase in temperature, went on to occupy the entire basin. Finally, we can see that the floras located in the Argentinean portion of West Gondwana are older and have greater species diversity than those present in the Paraná Basin and Africa during Phase A. In Phase B, there is a decline of Argentinean flora species, a large increase in the Paraná Basin floras, and an average increase in African floras. In the final stage, the floristic province no longer exists in Argentina, the flora of the Paraná Basin also suffers a decrease of specimens, and the African flora undergoes its moment of greatest development. Such diversity change also reflects a west-to-east migration throughout the Late Carboniferous. © 2014 Elsevier B.V.

Climate change; Fossil plants; Gondwana; Paraná Basin

Argentina; Brazil; Parana Basin; Carboniferous; climate variation; floristics; fossil record; geographical distribution; Gondwana; migration; paleobotany; paleoclimate; paleogeography; Permian

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-84925395640

Martins G.P.D.O.; da Costa Rodrigues-Francisco V.M.; Rodrigues M.A.D.C.; Araújo-Júnior H.I.D.

Martins, Gustavo Prado de Oliveira (57202150057); da Costa Rodrigues-Francisco, Vanessa Maria (56200696500); Rodrigues, Maria Antonieta da Conceição (24773757800); Araújo-Júnior, Hermínio Ismael de (59157824100)

57202150057; 56200696500; 24773757800; 59157824100

Are early plants significant as paleogeographic indicators of past coastlines? Insights from the taphonomy and sedimentology of a Devonian taphoflora of Paraná Basin, Brazil

Palaeogeography, Palaeoclimatology, Palaeoecology

10.1016/j.palaeo.2018.05.047

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048132371&doi=10.1016%2fj.palaeo.2018.05.047&partnerID=40&md5=98359223a62ae5c338c435c26fc2c085

Programa de Pós-graduação em Análise de Bacias e Faixas Móveis, Faculdade de Geologia, Universidade do Estado do Rio Janeiro, Rio de Janeiro, 20550-013, Brazil; Departamento de Estratigrafia e Paleontologia, Faculdade de Geologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 20550-013, Brazil

Martins G.P.D.O., Programa de Pós-graduação em Análise de Bacias e Faixas Móveis, Faculdade de Geologia, Universidade do Estado do Rio Janeiro, Rio de Janeiro, 20550-013, Brazil; da Costa Rodrigues-Francisco V.M., Programa de Pós-graduação em Análise de Bacias e Faixas Móveis, Faculdade de Geologia, Universidade do Estado do Rio Janeiro, Rio de Janeiro, 20550-013, Brazil; Rodrigues M.A.D.C., Programa de Pós-graduação em Análise de Bacias e Faixas Móveis, Faculdade de Geologia, Universidade do Estado do Rio Janeiro, Rio de Janeiro, 20550-013, Brazil; Araújo-Júnior H.I.D., Departamento de Estratigrafia e Paleontologia, Faculdade de Geologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 20550-013, Brazil

The continental colonization process by plants is an underexplored theme in Brazil, especially concerning taphonomic studies of plants that existed during this age. This study aims to interpret the taphonomic and paleoenvironmental settings that best represent the fossil plant assemblages preserved in the upper strata of the Furnas Formation (Lower Devonian of Paraná Basin), at Jackson de Figueiredo county, municipality of Jaguariaíva (Paraná), clarifying the potential of these fossil plant assemblages for paleogeographic reconstructions. Taphonomic and sedimentological signatures were analyzed and submitted to multivariate statistical analyses (cluster and correspondence analyses). Two taphonomic groups were identified (Taphofacies A and B). The interpretation of the two groups allowed the visualization of: Taphofacies A, which consists of samples with a dispersed degree of packing, fragmented plant fossils, 40% mica with sizes between 0.5 and 1 mm and no trace fossils, is representative of relatively high-energy conditions; and Taphofacies B, which consists of densely packed plants with partial degree of fragmentation, 10% mica with sizes under 0.5 mm and both horizontal and vertical trace fossils, is representative of relatively low-energy conditions. Our taphonomic data are consistent with previous facies interpretations of a lagoon/interdistributary bay environment. In this context, taphofacies A represents episodic sedimentation events influenced by fluvial dynamics, yielding assemblages that are not suitable for paleogeographic interpretations, while Taphofacies B represents fossil assemblages originated in a low-energy sedimentary regime, with utility for paleogeographic reconstructions. © 2018 Elsevier B.V.

Furnas Formation; Paleobotany; Paleoenvironment; Paleogeography; Taphofacies

Parana Basin; coast; colonization; Devonian; fossil assemblage; paleobotany; paleoenvironment; paleogeography; plant; sedimentation; sedimentology; taphonomy; trace fossil

G.P.D.O. Martins; Programa de Pós-graduação em Análise de Bacias e Faixas Móveis, Faculdade de Geologia, Universidade do Estado do Rio Janeiro, Rio de Janeiro, 20550-013, Brazil; email: gustavo.prado.martins@gmail.com

Palaeogeogr. Palaeoclimatol. Palaeoecol.

2-s2.0-85048132371

Siegloch A.M.; Guerra-Sommer M.; Schultz C.L.; Barboza E.G.

Siegloch, Anelise Marta (56374376400); Guerra-Sommer, Margot (6602534370); Schultz, Cesar Leandro (7202476487); Barboza, Eduardo Guimaraes (8694684200)

56374376400; 6602534370; 7202476487; 8694684200

Paleoclimatic inferences based on wood growth interruptions in late triassic flood deposits from the southernmost Brazilian gondwana

Revista Brasileira de Paleontologia

10.4072/rbp.2021.1.01

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100274341&doi=10.4072%2frbp.2021.1.01&partnerID=40&md5=8f8e9db8c89091f11154fe5909158661

Universidade Federal do Rio Grande do Sul, IGEO, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil

Siegloch A.M., Universidade Federal do Rio Grande do Sul, IGEO, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Guerra-Sommer M., Universidade Federal do Rio Grande do Sul, IGEO, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Schultz C.L., Universidade Federal do Rio Grande do Sul, IGEO, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil; Barboza E.G., Universidade Federal do Rio Grande do Sul, IGEO, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Brazil

The goals of this study were to establish patterns in a silicified wood assemblage to depict the evolution patterns of the Triassic paleoclimate in southern Brazilian Gondwana during an interval of global arid to semi-arid climatic context, and the taphonomic process that led to the preservation of the so-called “Petrified Forest”, which is preserved in the central area of the state of Rio Grande do Sul. Analyses were developed with an assemblage of 13 permineralized conifer wood, using standard thin sections, whose anatomical details were studied in transmitted light. Ground-Penetrating Radar was used to obtain information about the depositional characteristics of the site. Main results are: true growth rings are absent in all samples, and the boundaries of the interruption zones are marked by an abrupt decline in cell diameter, but they are not accompanied by a reduction of cell wall thickness. The subsequent reversion to normal tracheid diameter is also abrupt, revealing the return of the previous growing conditions. Ground-penetrating Radar analyses confirmed that the Mata Sequence deposits correspond to a river. The identification of growth interruption zones in a Late Triassic wood assemblage in southernmost Brazilian Gondwana (Paleobotanic Garden of the city of Mata, RS) indicates the presence of tropical, temporarily dry climate conditions, characterized by irregular, short-term environmental disturbances to growth. The taphonomic process was related to a river-channel infilling depositional process, under the influence of high-energy flood events that dragged and buried the trees. © 2021, Sociedade Brasileira de Paleontologia. All rights reserved.

Gymnosperms; Mata sequence; Petrified forest; Triassic climate; Wood growth patterns

Sociedade Brasileira de Paleontologia

Rev. Bras. Paleontol.

All Open Access; Hybrid Gold Open Access

2-s2.0-85100274341

Schneider J.V.; Jungcurt T.; Cardoso D.; Amorim A.M.; Töpel M.; Andermann T.; Poncy O.; Berberich T.; Zizka G.

Schneider, Julio V. (7404422893); Jungcurt, Tanja (57190752329); Cardoso, Domingos (24376377600); Amorim, André Márcio (7006426787); Töpel, Mats (24176423200); Andermann, Tobias (57202956432); Poncy, Odile (14042477400); Berberich, Thomas (6602805091); Zizka, Georg (55904249700)

7404422893; 57190752329; 24376377600; 7006426787; 24176423200; 57202956432; 14042477400; 6602805091; 55904249700

Phylogenomics of the tropical plant family Ochnaceae using targeted enrichment of nuclear genes and 250+ taxa

10.1002/tax.12421

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098512386&doi=10.1002%2ftax.12421&partnerID=40&md5=0722d4c2b46ef398eba65648535b4a9a

Senckenberg Research Institute and Natural History Museum Frankfurt, Department of Botany and Molecular Evolution, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany; Senckenberg Research Institute and Natural History Museum Frankfurt, Entomology III, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany; Goethe-University, Institute of Ecology, Evolution and Diversity, Max-von-Laue-Str. 13, Frankfurt am Main, 60439, Germany; Instituto de Biologia, Universidade Federal da Bahia (UFBA), Rua Barão de Jeremoabo, Ondina, Salvador, 40170-115, Bahia, Brazil; Universidade Estadual de Santa Cruz (UESC), km 16 Rodovia Ilhéus-Itabuna, Ilhéus, 45662-900, BA, Brazil; Herbário André Maurício Vieira de Carvalho, CEPEC, CEPLAC, CP 07, CEP, Itabuna, 45600-970, BA, Brazil; University of Gothenburg, Marine Sciences, Box 461, Gothenburg, 405 30, Sweden; Gothenburg Global Biodiversity Centre, Box 461, Gothenburg, 405 30, Sweden; University of Gothenburg, Biological and Environmental Sciences, Medicinaregatan 18, Gothenburg, 41390, Sweden; Sorbonne Université, UPMC Univ Paris 06, MNHN, CNRS, EPHE, Institut de Systématique, Évolution, Biodiversité (ISYEB), CP39, 57 rue Cuvier, Paris, Cedex 05, 75231, France; Senckenberg Biodiversity and Climate Research Center, Lab-Center, Georg-Voigt-Straße 14–16, Frankfurt am Main, 60325, Germany

Schneider J.V., Senckenberg Research Institute and Natural History Museum Frankfurt, Department of Botany and Molecular Evolution, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany, Senckenberg Research Institute and Natural History Museum Frankfurt, Entomology III, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany; Jungcurt T., Senckenberg Research Institute and Natural History Museum Frankfurt, Department of Botany and Molecular Evolution, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany, Goethe-University, Institute of Ecology, Evolution and Diversity, Max-von-Laue-Str. 13, Frankfurt am Main, 60439, Germany; Cardoso D., Instituto de Biologia, Universidade Federal da Bahia (UFBA), Rua Barão de Jeremoabo, Ondina, Salvador, 40170-115, Bahia, Brazil; Amorim A.M., Universidade Estadual de Santa Cruz (UESC), km 16 Rodovia Ilhéus-Itabuna, Ilhéus, 45662-900, BA, Brazil, Herbário André Maurício Vieira de Carvalho, CEPEC, CEPLAC, CP 07, CEP, Itabuna, 45600-970, BA, Brazil; Töpel M., University of Gothenburg, Marine Sciences, Box 461, Gothenburg, 405 30, Sweden, Gothenburg Global Biodiversity Centre, Box 461, Gothenburg, 405 30, Sweden; Andermann T., Gothenburg Global Biodiversity Centre, Box 461, Gothenburg, 405 30, Sweden, University of Gothenburg, Biological and Environmental Sciences, Medicinaregatan 18, Gothenburg, 41390, Sweden; Poncy O., Sorbonne Université, UPMC Univ Paris 06, MNHN, CNRS, EPHE, Institut de Systématique, Évolution, Biodiversité (ISYEB), CP39, 57 rue Cuvier, Paris, Cedex 05, 75231, France; Berberich T., Senckenberg Biodiversity and Climate Research Center, Lab-Center, Georg-Voigt-Straße 14–16, Frankfurt am Main, 60325, Germany; Zizka G., Senckenberg Research Institute and Natural History Museum Frankfurt, Department of Botany and Molecular Evolution, Mertonstraße 17–21, Frankfurt am Main, 60325, Germany, Goethe-University, Institute of Ecology, Evolution and Diversity, Max-von-Laue-Str. 13, Frankfurt am Main, 60439, Germany

Targeted capture of nuclear genes increasingly contributes to unravelling phylogenetic relationships that hitherto remained unresolved because of limitations of traditional Sanger sequencing. In particular, the study of tropical plant families has been compromised because they often rely on highly degraded DNA obtained from herbarium specimens. One such example is the pantropical Ochnaceae, which comprises 33 genera and approximately 550 species, occurring mostly in savannas and moist tropical forests. Here, we developed a set of baits covering about 660,000 bp from 275 nuclear genes used for the targeted enrichment based on all but one genus and more than 250 species. Using this novel dataset, we resolved the phylogenetic backbone of Ochnaceae, including that of Ochninae, and we established new relationships. Most importantly, our findings highlight that the neotropical and palaeotropical taxa of Sauvagesia form independent clades, requiring the re-erection of formerly separate genera. Ouratea and Ochna (both Ochninae), by far the most species-rich genera and represented by 120 and 41 species, respectively, came out as monophyletic. In contrast, the third-most species-rich genus, Campylospermum, is polyphyletic in two distinct clades. Ouratea, the only neotropical genus of Ochninae, was sister to the five palaeotropical genera of this subtribe. The bait kit developed in this study proved to be particularly useful for unravelling relationships within Ochninae, which includes about two-thirds of the species diversity in the family. © 2020 The Authors. TAXON published by John Wiley & Sons Ltd on behalf of International Association for Plant Taxonomy.

baits; hybrid enrichment; Malpighiales; multispecies coalescent approach; remapping strategies; species tree

Malpighiales; Ochnaceae; Ouratea; Sauvagesia; gene expression; herb; Neotropical Region; paleobotany; paleoecology; phylogenetics; plant; savanna; species diversity; tropical environment; tropical forest; type specimen

J.V. Schneider; Senckenberg Research Institute and Natural History Museum Frankfurt, Department of Botany and Molecular Evolution, Frankfurt am Main, Mertonstraße 17–21, 60325, Germany; email: julio.schneider@senckenberg.de; J.V. Schneider; Senckenberg Research Institute and Natural History Museum Frankfurt, Entomology III, Frankfurt am Main, Mertonstraße 17–21, 60325, Germany; email: julio.schneider@senckenberg.de

John Wiley and Sons Inc

All Open Access; Hybrid Gold Open Access

2-s2.0-85098512386

Da Conceição D.M.; Cisneros J.C.; Iannuzzi R.

Da Conceição, Domingas Maria (57189657696); Cisneros, Juan Carlos (7005825015); Iannuzzi, Roberto (6603970107)

57189657696; 7005825015; 6603970107

New record of a petrified forest in Altos, Piauí: Importance and strategies for geoconservation; [Novo registro de floresta petrificada em Altos, Piauí: Relevância e estratégias para geoconservação]

Pesquisas em Geociencias

10.22456/1807-9806.78242

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013576417&doi=10.22456%2f1807-9806.78242&partnerID=40&md5=f61a1d570ed78562fb8bd21d4182ae8e

Universidade Federal de Pernambuco, Av. Acadêmico Hélio Ramos, s/n, Recife, CEP 50740-530, PE, Brazil; Departamento de Ciências da Natureza, Universidade Federal do Piauí, Av. Ininga, s/n, Teresina, CEP 64049-550, PI, Brazil; Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91540-000, RS, Brazil

Da Conceição D.M., Universidade Federal de Pernambuco, Av. Acadêmico Hélio Ramos, s/n, Recife, CEP 50740-530, PE, Brazil; Cisneros J.C., Universidade Federal de Pernambuco, Av. Acadêmico Hélio Ramos, s/n, Recife, CEP 50740-530, PE, Brazil, Departamento de Ciências da Natureza, Universidade Federal do Piauí, Av. Ininga, s/n, Teresina, CEP 64049-550, PI, Brazil; Iannuzzi R., Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, CEP 91540-000, RS, Brazil

Here were present a new record of fossil plants from the early Permian Pedra de Fogo Formation of the Parnaíba Basin, northeastern Brazil. This fossiliferous area, here named São Benedito Paleobotanical Site in municipality of Altos, Piauí state, and it is characterized by a great number of large gymnosperm trunks, measuring up to 1,80 m in diameter, some of them being possibly preserved in life position. More than 70 fossil tree logs were cataloged, probably constituting the largest concentration of permineralized trunks recorded in the state, surpassing the well-known Poti River Fossil Forest, in Teresina. Also, some proposals for its preservation are presented, taking into consideration that the site currently has no legal bases for its protection. This new record of fossil plants evidences the great potential for palaeobotanical studies existing in the basin. © 2016, Universidade Federal do Rio Grande do Sul. All rights reserved.

Fossil Forest; Gymnosperms; Lower Permian; Paleontological Heritage; Parnaíba Basin; Pedra de Fogo Formation

D.M. Da Conceição; Universidade Federal de Pernambuco, Recife, Av. Acadêmico Hélio Ramos, s/n, CEP 50740-530, Brazil; email: domingasmary@hotmail.com

Universidade Federal do Rio Grande do Sul

Pesqui. Geociencias

All Open Access; Gold Open Access; Green Open Access

2-s2.0-85013576417

Rischbieter M.; Neregato R.; Iannuzzi R.; di Pasquo M.M.; Alvarenga R.; Freitas J.

Rischbieter, M. (54895156200); Neregato, R. (56493036400); Iannuzzi, R. (6603970107); di Pasquo, M.M. (6506967382); Alvarenga, R. (37100946700); Freitas, J. (57892521600)

54895156200; 56493036400; 6603970107; 6506967382; 37100946700; 57892521600

A new flora from the Rio Bonito Formation (late Asselian) and its implications for the biostratigraphy of the southern Paraná Basin, Brazil

Journal of South American Earth Sciences

10.1016/j.jsames.2022.104010

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85138219071&doi=10.1016%2fj.jsames.2022.104010&partnerID=40&md5=44209abd735bcac60fc3deb3cc96dc59

Presbyterian College, 207 East Maple Street Clinton, 29325, SC, United States; Universidade Federal Do Rio Grande Do Sul, PO Box, 15001, Rio Grande do Sul, Porto Alegre, 91501-970, Brazil; Laboratorio de Palinoestratigrafía y Paleobotánica, CICYTTP (CONICET-ER-UADER), Dr. Matteri 49, Diamante E3105BWA, Entre Ríos, Argentina; Agência Nacional de Mineração (ANM), R. Dr. Álvaro Milen da Silveira 104, Catarina, Santa, Florianópolis, 88020-180, Brazil

Rischbieter M., Presbyterian College, 207 East Maple Street Clinton, 29325, SC, United States; Neregato R., Universidade Federal Do Rio Grande Do Sul, PO Box, 15001, Rio Grande do Sul, Porto Alegre, 91501-970, Brazil; Iannuzzi R., Universidade Federal Do Rio Grande Do Sul, PO Box, 15001, Rio Grande do Sul, Porto Alegre, 91501-970, Brazil; di Pasquo M.M., Laboratorio de Palinoestratigrafía y Paleobotánica, CICYTTP (CONICET-ER-UADER), Dr. Matteri 49, Diamante E3105BWA, Entre Ríos, Argentina; Alvarenga R., Universidade Federal Do Rio Grande Do Sul, PO Box, 15001, Rio Grande do Sul, Porto Alegre, 91501-970, Brazil; Freitas J., Agência Nacional de Mineração (ANM), R. Dr. Álvaro Milen da Silveira 104, Catarina, Santa, Florianópolis, 88020-180, Brazil

The results of this contribution represent the first attempt regarding palynological and paleobotanical records from the municipality of Alfredo Wagner, Santa Catarina State, southern Brazil. The fossils were recovered in the top of the Siderópolis Member, upper portion of the Rio Bonito Formation, Paraná Basin. The palynological assemblage revealed a well-preserved assemblage composed of 28 spores and 24 pollen, mainly dominated by ferns and gymnosperms, correlated with the Vittatina costabilis Zone. Eight taxa are first records for this unit (Granulatisporites varigranifer, Punctatisporites subvaricosus, Gondisporites serrulatus, Didecitriletes sp, Vitreisporites signatus, Alisporites ovatus, Pteruchipollenites indarraensis and Cycadopites cymbatus), and three of them for the basin (P. subvaricosus, Didecitriletes sp. and C. cymbatus). The paleobotanical assemblage is mainly represented by Glossopteris (seven species), ferns (Pecopteris and Sphenopteris) and seeds (Cornucarpus, Cordaicarpus and Samaropsis), corresponding to the Gondwanan “Glossopteris Flora”. Although Cheirophyllum and Cornucarpus would be typical and restricted to the underlying Phyllotheca-Gangamopteris Flora, their presence allows us to correlate the floristic deposits with the basal part of the Glossopteris-Brasilodendron Flora range. In addition, U–Pb zircon CA-TIMS datings obtained in nearby correlated sections allows the macro- and microfloras to be constrained to the latest Asselian age. © 2022

Biostratigraphy; early Permian; Fossil plants; Palynology; Paraná Basin; Rio Bonito Formation

Parana Basin; biostratigraphy; fossil assemblage; fossil record; paleobotany; Permian; uranium-lead dating

R. Neregato; Universidade Federal Do Rio Grande Do Sul, Porto Alegre, PO Box, 15001, Rio Grande do Sul, 91501-970, Brazil; email: rodrigoneregato@hotmail.com; R. Iannuzzi; Universidade Federal Do Rio Grande Do Sul, Porto Alegre, PO Box, 15001, Rio Grande do Sul, 91501-970, Brazil; email: roberto.iannuzzi@ufrgs.br

J. South Am. Earth Sci.

All Open Access; Bronze Open Access

2-s2.0-85138219071

Watling J.; Castro M.T.; Simon M.F.; Rodrigues F.O.; Brilhante de Medeiros M.; De Oliveira P.E.; Neves E.G.

Watling, Jennifer (36554988200); Castro, Martín Torres (57214861399); Simon, Marcelo F. (7404410415); Rodrigues, Flavio O. (57216781496); Brilhante de Medeiros, Marcelo (57216785762); De Oliveira, Paulo E. (7102812852); Neves, Eduardo G. (16203700600)

36554988200; 57214861399; 7404410415; 57216781496; 57216785762; 7102812852; 16203700600

Phytoliths from native plants and surface soils from the Upper Madeira river, SW Amazonia, and their potential for paleoecological reconstruction

Quaternary International

10.1016/j.quaint.2020.03.045

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084659556&doi=10.1016%2fj.quaint.2020.03.045&partnerID=40&md5=ece71646df61771d533cc4c4692a3e69

Museum of Archaeology and Ethnology, University of São Paulo, Av. Prof. Almeida Prado 1466, São Paulo, 05508-070, SP, Brazil; Institute of Geosciences, University of São Paulo, Rua Do Lago 562, São Paulo, 05507-070, SP, Brazil; Embrapa Genetic Resources and Biotechnology, Av. W5 Norte, Final, Brasília, 70770-917, DF, Brazil; Graduate Program in Ecology and Evolution, Department of Ecology, Federal University of Goiás, Institute of Biological Sciences, Av. Esperança s/n, Setor Vila Itatiaia, Goiânia, 74690-900, Goiás, Brazil; Keller Science Action Center, The Field Museum of Natural History, 1400 S. Lake Shore Dr, Chicago, 60605, IL, United States

Watling J., Museum of Archaeology and Ethnology, University of São Paulo, Av. Prof. Almeida Prado 1466, São Paulo, 05508-070, SP, Brazil; Castro M.T., Institute of Geosciences, University of São Paulo, Rua Do Lago 562, São Paulo, 05507-070, SP, Brazil; Simon M.F., Embrapa Genetic Resources and Biotechnology, Av. W5 Norte, Final, Brasília, 70770-917, DF, Brazil; Rodrigues F.O., Graduate Program in Ecology and Evolution, Department of Ecology, Federal University of Goiás, Institute of Biological Sciences, Av. Esperança s/n, Setor Vila Itatiaia, Goiânia, 74690-900, Goiás, Brazil; Brilhante de Medeiros M., Embrapa Genetic Resources and Biotechnology, Av. W5 Norte, Final, Brasília, 70770-917, DF, Brazil; De Oliveira P.E., Institute of Geosciences, University of São Paulo, Rua Do Lago 562, São Paulo, 05507-070, SP, Brazil, Keller Science Action Center, The Field Museum of Natural History, 1400 S. Lake Shore Dr, Chicago, 60605, IL, United States; Neves E.G., Museum of Archaeology and Ethnology, University of São Paulo, Av. Prof. Almeida Prado 1466, São Paulo, 05508-070, SP, Brazil

Phytolith reference collections of plants and surface soils are a critical part of studies that use these microbotanical remains for archaeological and paleoecological reconstruction. In the archaeologically-rich region of the Upper Madeira river in Rondônia, Brazil, phytolith analysis is being applied in both on- and off-site contexts in order to shed light on human-environment interactions over a period that extends almost the entire Holocene. The present study brings together data on phytolith production patterns among 90 native species, representing 36 plant families, as well as 56 surface soil samples taken from underneath 11 monitored forest plots. Our discussion focuses on the comparison between the surface soil phytolith records and the above-ground floristic inventories, scrutinized considering the plant reference collection results. We found that the phytoliths of several species which produce diagnostic or potentially-diagnostic morphotypes were under-represented in the surface soils, including several understory herbs. While the phytolith assemblages from three forest types (palm, sororoca and dense forest) presented considerable overlap, in accordance with similarities in the floristic inventories, bamboo forest and different types of campinaranas were able to be distinguished based on their phytolith signatures. © 2020 Elsevier Ltd and INQUA

Amazonia; Phytoliths; Reference collection

Amazonia; Brazil; Madeira River; Nia; angiosperm; archaeology; Holocene; native species; paleobotany; paleoecology; phytolith; topsoil

J. Watling; Museum of Archaeology and Ethnology, University of São Paulo, São Paulo, Av. Prof. Almeida Prado 1466, 05508-070, Brazil; email: jwatling@usp.br

2-s2.0-85084659556

Barboni R.; Dutra T.L.

Barboni, Ronaldo (55331047200); Dutra, Tania Lindner (55983008300)

55331047200; 55983008300

New "flower" and leaves of bennettitales from southern Brazil and their implication in the age of the lower mesozoic deposits

10.5710/AMGH.28.11.2012.444

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881060632&doi=10.5710%2fAMGH.28.11.2012.444&partnerID=40&md5=1a2fad561a16d28671302572e9a2472c

Graduation Program in Geology, Universidade Do Vale Do Rio Dos Sinos, UNISINOS, CEP. 93022-000, São Leopoldo, Av. Unisinos 950, Brazil

Barboni R., Graduation Program in Geology, Universidade Do Vale Do Rio Dos Sinos, UNISINOS, CEP. 93022-000, São Leopoldo, Av. Unisinos 950, Brazil; Dutra T.L., Graduation Program in Geology, Universidade Do Vale Do Rio Dos Sinos, UNISINOS, CEP. 93022-000, São Leopoldo, Av. Unisinos 950, Brazil

The record of Bennettitales from west-central Argentina and southern Brazil in South America is among the oldest known. In contrast to the better known near-coastal assemblages from the Northern Hemisphere, these Gondwanic elements are restricted to continental areas and isolated rift basins, similar to those in South Africa. Williamsonia potyporanae sp. nov. is preserved by impressions that expose distinct longitudinal sections of the ovulate structure, allowing the reconstruction of its tridimensional aspect, and is accompanied by probable Pterophyllum leaves. It consists of an ovate-shaped flower covered by two layers of delicate and connected ribbon-shaped and hairy bracts, and an obconic receptacle supporting a great number of megasporophylls, with uniformly aligned and apical fusiform ovules or seeds. The bennettite remains are part of an autochtonous-parautochtonous floral assemblage dominated by conifers and restricted to a thin mudstone interval in a mainly fluvial deposition comprisig the Caturrita Formation. The mud interval suggests a shallow lake supplied by periodic, intense rainfall that affected the vegetation growing along the river banks and/or on a floodplain deposits. An initially proposed Norian age, based on diversified vertebrate remains found in lower levels (Ictidosaur or Mammaliamorpha Cenozone), was recently extended to the Rhaetian. The advanced morphology of ovulate structure described here suggest an even younger Jurassic age, supported by comparisons with other fossil assemblages, mainly those from Argentine basins.

Bennettitales; Caturrita formation; Lower jurassic; Pterophyllum; Southern Brazil; Williamsonia

Argentina; Brazil; age determination; extinction; floodplain; flower; fluvial deposit; fossil assemblage; Gondwana; gymnosperm; Jurassic; leaf; morphology; mudstone; paleobotany; rainfall; Rhaetian; rift zone

2-s2.0-84881060632

do Nascimento D.L.; Batezelli A.; Ladeira F.S.B.

do Nascimento, Diego Luciano (57204038909); Batezelli, Alessandro (56400980000); Ladeira, Francisco Sérgio Bernardes (15848917900)

57204038909; 56400980000; 15848917900

The paleoecological and paleoenvironmental importance of root traces: Plant distribution and topographic significance of root patterns in Upper Cretaceous paleosols

10.1016/j.catena.2018.09.040

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054040728&doi=10.1016%2fj.catena.2018.09.040&partnerID=40&md5=0114503920fbb2ec6fd9d94ee3e8b9b0

Institute of Geosciences, State University of Campinas - UNICAMP, SP, Brazil; Department of Geology and Natural Resources - Institute of Geosciences, State University of Campinas – UNICAMP, SP, Brazil; Department of Geography - Institute of Geosciences, State University of Campinas - UNICAMP, SP, Brazil

do Nascimento D.L., Institute of Geosciences, State University of Campinas - UNICAMP, SP, Brazil; Batezelli A., Department of Geology and Natural Resources - Institute of Geosciences, State University of Campinas – UNICAMP, SP, Brazil; Ladeira F.S.B., Department of Geography - Institute of Geosciences, State University of Campinas - UNICAMP, SP, Brazil

Rhizoliths are organosedimentary structures produced by plants and are an important proxy for paleoenvironmental reconstructions because the differences in the morphology of rhizoliths and their rooting depths can be used to interpret soil humidity regimes, overall biomass at the soil surface, and the behavior of the water table. With the objective of advancing knowledge on rhizoliths, a study was performed on the macromorphological and micromorphological characterizations of the rhizoliths preserved in the thirty-one paleosols of the Marília Formation in Minas Gerais, southeastern Brazil. Based on the topological and architectural attributes of rhizoliths, and on their possible functional adaptations, such as mycorrhizal associations, three different types of rhizoliths are described in this study and represent at least three different plants: rhizohaloes, root casts and rhizocretions. Well-developed paleosols with nodular horizons contain the higher density of long root casts, indicating a seasonally dry environment, because the root casts present two meters in length. These adaptations are associated with an exploitation of a lowered water table during most times of the year. The higher density of rhizoliths indicates an area with agglomerated arboreous arbustive vegetation cover. Paleosols with chalky horizons also show a high density of root casts, indicating a landscape with high plant density that is adapted to drained soils, but with a seasonally elevated water table or the influence of ephemeral flows, given the proximity to the flow channels. The poorly drained paleosols with redoximorphic features show the lowest density of rhizoliths, thus indicating an incipient vegetation in response to near-surface water table and waterlogged soils in a distal floodplain. The rhizogenic laminar horizons have developed near fluvial channels with frequent sedimentary input, resulting in a sequence of laminar horizons composed of rhizocretions that are separated by sandy deposits or poorly developed pedogenic horizons. The micromorphological analysis on the rhizogenic laminar calcretes showed biogenic features, such as alveolar septal structures, calcified filaments, microcodium, calcified cells and pisoliths. Despite the scarce paleobotanical findings in the Marília Formation, the results obtained indicate an ecosystem that was composed of plants varying from herbaceous to arboreous, with an environment similar to modern semiarid shrublands. © 2018 Elsevier B.V.

Ichnology; Paleopedology; Rhizocretions; Rhizohaloes; Rhizoliths; Root casts

Brazil; Minas Gerais; Microcodium; biomass; exploitation; humidity; paleoecology; paleoenvironment; paleosol; proxy climate record; reconstruction; rhizolith; root system; sedimentary structure; topography; water table

D.L. do Nascimento; Institute of Geosciences, State University of Campinas - UNICAMP, Brazil; email: diego.nascimento@ige.unicamp.br

2-s2.0-85054040728