Fossil Evidence of Human Ancestors
Discovering the early ancestors of humans
Lucy,
the first hominid found
Fossil Evidence Beyond Lucy
Discovering the early ancestors of humans
Take a guess! Which of these is human?
EVIDENCE FROM FOSSILS
01.
PRIOR KNOWLEDGE:
Watch
02. Evidence from skulls
What information can be revealed from having a nearly complete cranium?
__________?
Indicated by the shape of the eyes, jaw, and facial bones
__________?
Indicated by the shape shape of the teeth and the wearing on the teeth and jaw
__________?
Measured by skull circumference and volume
01. Facial Appearance
02. Brain Size
03. Diet
04. Identify Relationships with DNA
Evidence from skulls
Indicated by the shape of the eyes, jaw, and facial bones
Measured by skull circumference and volume
Indicated by the shape shape of the teeth and the wearing on the teeth and jaw
DNA from fossils can be sequenced and compared in databases to identify evolutionary relationships
03. Additional Evidence
Image Credit:Lee Berger, University of the Witwatersrand
03. Additional Evidence
3. What observations can you make to compare these skeletons?
4. Suggest which two organisms are more closely related and why. Construct your answer as a CER.
03. Additional Evidence- Related species share similar structures
Homo sapiens have 3 modern lineages
Today’s humans come from 3 main lineages- African, Asian, and European descent. Genetically, there are not separate races, but there are unique features associated with each lineage.
04. Evolutionary Relationships
04. Evolutionary Relationships
Thanks!
Do you have any questions?
senelson@henrico.k12.va.us
Henrico High School
Henrico County Public Schools
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