ANTHROP 1AA3 Lecture Notes - Lecture 11: Stereopsis, Brachiation, Laetoli
27 Nov 2017
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Document Summary
There are approximately 190 species of non-human primates. prosimians monkeys apes primatestable1 ringtailedlemur monkey-spider1 photo of a gibbon brachiating. Laetoli, tanzania, c. 3. 5 - 3. 8 million years ago monkey_walking. Nail instead of claws (except some new world monkeys) Tactile pads with nerves at ends of ngers to enhance touch sense. Prehensile primate%20hands photo of 2 spider monkeys using their prehensile tails for support. Depth perception stereoscopic vision allows to see in three dimensions binocular vision-both eyes set toward front of head m7120 rhinariu 10. Evidence lies in analyses of fossils of hominin/hominid ancestors (bipedal ancestors of humans) who lived in east and south africa. Bipedalism limits the area of the body directly exposed to the sun; also helps with heat loss by allowing heat to rise up and away from body. Free hands for harvesting wild foods; tool use but tool use appears after bipedalism emerged. Bipedalism uses less energy over long distances see.
