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Unformatted text preview: • 5 digits on hands and feet • Opposable thumb + big toe • Nails instead of claws • Sensory pads at ends of digits • Lack of dietary specialization-omnivorous • Reliance on sense of vision o Color vision (nocturnal primates color blind) o Binocular vision o Stereoscopic vision (information from eyes goes to both sides of the brain) o 3D o Depth perception • Decreased reliance on the sense of smell • Expansion and increased complexity of the brain • Longer gestation and maturation periods and longer life span • Greater dependence on learned behavior • Tendency to live in social groups • Tendency for diurnal activity Dentition • Evolutionary trend is reduction in number and size of teeth o 3-1-5-3 = early mammals o 2-1-4-2 = early fossil primates o 2-1-3-3 = new world monkeys and Prosimii o 2-1-2-3 = old world monkeys and hominoidea • Y5 in molars...
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- Winter '09
- Anthropology, primates Natural section, single gene Primates, early fossil primates