ANTH 002 Lecture Notes - Lecture 10: Binocular Vision, Stereopsis, Postorbital Bar
10 Jun 2020
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Document Summary
Some key behavioral features likely to be found in early hominins. Have at least 39 different, locally expressed learned behaviors. Used tools for foraging, manipulating a natural object to achieve a desired goal so we can infer that our common ancestor did so too. Most hunting is cooperative effort most primates are vegetarian but last common ancestor probably ate meat. Characteristics of animals: hair, specialized sweat glands (mammal glands, live young (viva parity, warm blooded (endothermic) constant body temp, heterodonty (several types of teeth, relative large brains, capacity for learning and behavioral flexibility. Tend to have an erect posture, upright. Rely more on vision rather than smell. Depth perception with stereoscopic vision (binocular vision due to eyes placed in front of face) Expansion and increased complexity of the brain. Longer pregnancies (gestation) and longer for them to mature (delayed maturation) Greater dependence on flexible, learned behavior baby chimps learned from mother on how to use stick to get ants.
