List two post-cranial traits Au. afarensis had that indicate this species was adapted for bipedalism. Explain how each adaptation allowed Au. afarensis to walk bipedally.
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Pelvis: The pelvis of Au. afarensis was adapted for bipedalism. The iliac blades were shorter and broader, and the sacrum was wider and flatter than in apes. These adaptations allowed the weight of the body to be transferred from the trunk to the legs during Show more…
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