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Lecture 14 (3-6)

Lecture 14 (3-6) - Pre-Australopithecines last common...

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Pre-Australopithecines : last common ancestor between Pan and Homo social behaviors complex and flexible behaviors. probable tool use, stone use, hunting, and possible infanticide non-kin coalitions Sahelanthropus: tall vertical face, little prognathism thick orbital ridges- very derived small teeth (small canine) dental arcade is parabola shaped and more human-like Orrorin : teeth have very thick enamel, but are still very small. jaws are very big and robust climbing (?) anatomy of arm and hand lower limbs look like possible bipedalism Ardipithecus: -foramen magnum is located forward, suggesting it was bipedal. -enamel on the teeth is very thin
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Lecture 14 (3-6) - Pre-Australopithecines last common...

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