ANTHROP 2200H Chapter Notes - Chapter 9: Pleistocene, Oreopithecus, Sivapithecus
19 Aug 2016
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Chapter 9: primate origins and evolution: why did primates emerge, arboreal hypothesis. Proposition that primates" unique suite of traits is an adaptation to living in trees. Sir grafton elliot smith and frederic wood jones. Grasping hands and feet; binocular vision; smell no longer necessary; greater intelligence: visual predation hypothesis. Proposition that unique primate traits arose as adaptations to preying on insects and on small animals. Proposition that certain primate traits, such as visual acuity, occurred in response to the availability of fruit and flowers following the spread of angiosperms. Paleocene organisms that may have been the first primates, originating from an adaptive radiation of mammals. A separate order of early primate ancestors from the. Paleocene, such as the plesiadapiforms: eocene euprimates: the first true primates. The first true primates from the eocene; the tarsierlike. Clear primate characteristics: postorbital bar, convergent eye orbits, long digits with opposability for grasping, digits with nails, nonspecialized teeth, large brain.
