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Chapter 3

ANTH 1210 Chapter 3: Topic 34

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ANTH 1210
Haskel J.Greenfield

c82 Primates evolved as arboreal animals Today many no longer are arboreal Humans, baboons, gorillas, chimpanzees Different locomotor systems adapted to kinds of environment that we live in Arboreal, terrestrial All primates can move in a variety of positions Unusual in comparison with other types of mammals Most others have more limited range of movement possibilities Movement range is related to living in a complex, tangled environment Where movement from one position to the next may entail or a combination of postures 7 types of locomotion each species usually relies more heavily on a particular type may also represent an evolutionary sequence of locomotion in primates preprimate locomotion can move quickly on all 4s long tree branch, in all directions (up, down, side, etc.) treeshrew bones of forearm linked by mobile joint hands and feet have 5 clawed digits long and flexible tail shorter forelimbs than hindlimb Prosimians Tarsiers etc. Retained general primitive mammalian body form = long, mobile back, muscular hind limbs, tail for balance, shorter forelimbs, forelimb joints with great deal of rotation developed universal primate adaptation to climbing grasping instead of running on top of limbs, can g asp branch and move in any fashion on it can cling an move up and down vertical limbs of trees Quadrupeds Arboreal and terrestrial Move quadrapedally
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