Earth Sciences 1083F/G Study Guide - Old World Monkey, Aegyptopithecus, Simian
7 Jan 2013
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Arboreal theory: primates became primates by adapting to life in trees, enhanced sight (depth perception, grasping hands and feet. Visual predation hypothesis: binocular vision, grasping hands and feet, and reduced claws developed because they facilitated the capture of insects, first adapted to life in the bushy forest undergrowth and low tree branches. The earliest primates date to at least the paleocene (65-54 million years ago), but possibly appeared as early as late cretaceous. The eocene (54-38 million years ago) was the epoch of. __________ with at least 60 different genera in two families. Anthropoid line split from prosimian line: by paleocene or eocene. Anthropoids: ( higher primates , monkey, marmosets, tamarins, spider monkeys. Prosimians: ( lower primates ) lemur lorises. Anthropoid eyes are rotated more forward compared to prosimians. Anthropoids have a fully enclosed bony eye socket. Anthropoids have a dry nose separate from the upper lip. Anthropoid molars more complex and differentiated than prosimian.
