Anthro Notes Humans have a bigger brain, more complex culture, and bipedalism Bipedalism predates by 4 million years because it is firstkey adaption that separates us Why did bipedalism evolve? Why bipedalism? How do we recognize bipedalism in the fossil record? Environment Cooling and drying trend # of species rise Ability to digest unripe fruit # of apes declining Bipedalism- efficient ground locomotion Travel between trees? Predator spotting ? up tall can see farther distances Feeding behavior- can reach down and up Provisicerty hypothesis- Lovejoy Few offspring with a lot of parental care If female limited by energy== # of children Access to females that limits # of children Males get provision food-offer it to females in exchange get to mate Females get food Bipedal expends less energy than other forms of locomotion Benefits of bipedalism Frees hands of locomotive use Carry and manipulate tools Early hominids= digging sticks Skull- foramen magnum Biped- @bottom, towards front Head it balanced Chimp- @ bottom, towards back Quadrupedalism Head projects forward Ape- body is behind your head @ back Human- head balanced Towards the front Fossil- towards front Bipedal
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