Anthropology 101.14

Anthropology 101.14 - 10/21/10 Hominoid vs. Hominid Anatomy...

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10/21/10 Hominoid vs. Hominid Anatomy -How do hominoids (apes) differ from hominids (bipeds)? -teeth -facial prognathism -brain size -hands and feet -locomotion (how they get around) -Bipedalism & canine size reduction occur early -Brain size (enlargement), language, technology occur together later -Chimp= 400cc -Australopithecus= 350-450cc -H. habilis= 600cc -H. erectus= 1000cc -H. sapiens= 1350cc -Reduced canine size in hominids -Shortened & lighter jaws -Thicker tooth enamel -Hominids= thick tooth enamel, smaller front teeth, & larger back teeth. -Ape emphasis on muscles for chewing (way in the back on the head, vs. humans more in the temple part of the head, therefore apes have more chewing muscle) -Ape= short, stiff spine & funnel shaped chest -Humans= long flexible spine & barrel shaped chest -Ape Anatomy= divergent big toe adapted to arboreal locomotion -Biped Foot Anatomy -bipeds have a very specialized foot -2 arches longitudinal & transverse -lead to our characteristic footprint -allow for springiness & shock absorption
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Anthropology 101.14 - 10/21/10 Hominoid vs. Hominid Anatomy...

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