ANTHR101 Study Guide - Midterm Guide: Prognathism, Bipedalism, Brain Size
11 Dec 2018
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Trends in human evolution: adaptation to bipedal locomotion, started that we walked on all fours and most likely knuckle walkers o. Many anatomical changes: gradual increase in body size, gradual reduction in sexual dimorphism, reduced facial prognathism. But humans have lost this ability and now have the non-honing canine complex. Increased dependence on tools for survival: changes significantly our evolution e. g. complexity of hands because we use our hands a lot more. Spot predators or pray: travelling between food trees, less likely because we"re losing the ability to climb to feed from trees not sensible. Could be what these species did: ardipithecus, same as humans: some sexual dimorphism, pelvis, foramen magnum, different from humans: opposable big toe, long arms and hands. The definite hominins - australopithecines (there"s no doubt that they"re bipedal) Osteodontokeratic is composed of 3 different roots: osteo: bone, works as a good tool, donto: teeth.
