ANTH 011 Lecture Notes - Lecture 16: Ardipithecus, Flat Feet, Sahelanthropus
22 Dec 2020
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Document Summary
All of these changes happened during the pliocene- this is a very small portion of overall evolutionary history of primates. Comes from africa (east central, east and south africa) All the fossil primates exist in other areas aswell. Ape ancestors were living in europe and asia during the miocene. A fossil: remains or traces of animals and plants preserves by natural causes (must be 12,000 years old) Fossil evidence shows that early hominins adopted bipedal behavior long before encephalization (the habitual practice of walking on hind legs) Stance: beginning of cycle is when heel strikes the ground, then flat foot. Stance leg: adbuctors hold trunk upright over stance leg (we keep our center of. Toe-off: plantarflexors produce forward motion (where most of our forward gravity using our gludius minimus and another muscle) motion come from. Anatomical feautres of bipedalism to allow for birth. Pelvic shapel ours is much more broad.
