ARCH 131 Study Guide - Final Guide: Sivalik Hills, Golden Lion Tamarin, East African Rift

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*phyla of the animal kingdom- chordata *phylum chordata class= mammalia. The class mammalia is divided up into three infraclasses: metatheria: marsupials. The infraclass eutheria includes about two dozen diferent orders, one of which is primata. Common primate traits: 9 anatomical traits: grasping hands with opposable 1st and 2nd digits (prehensibility, flatened nails, forward- facing eyes, stereoscopic vision. Aroboreal hypothesis (wood - jones and elliot-smith, 1920s) Body capable to adapt in wide range environments *primates. Types of primate locomoion: moving from point a to point b. Terrestrial quadrupedalism *can climb trees, spend most of ime on open lat land *bigger. Bipedalism (occasional (awk), habitual/ facultaive *bonobos, obligate) *walking on hind legs. Bunodont morals: help us eat a wide range of food. Switch from being nocturnal (beter sense of smell) -> diurnal (beter eyesight) Presence of a petrosal bulla: bony covering that protects the inner ear. Protect eyes, evoluion= depending more on eyesight than sense of smell.

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