BIO 200 Lecture Notes - Lecture 1: Binocular Vision, Japanese Macaque, Haplorhini
28 Nov 2017
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Document Summary
Many groups nested within other groups in the primate line. Grasping fingers and toes (grip limbs, hang, swing, use tools, grab good - improved by fully opposable thumbs - flattened nails to replace claws) Carpolestes simpsoni fossils have grasping hand but no binocular vision. Binocular vision - eyes in front of head - allows to assess depth and distance. Two groups -haplorrhines (dry nosed primates) and strepsirrhines (wet nosed primates) Additional two groups within haplo - platyrrhini (flat nose - new world monkeys) and catarrhini (downward pointing nose - old world monkeys, gibbons and great apes) Hominoids (within catarrhini) - gibbons and great apes. Lemurs don"t act like other stepsirrhine groups --> madagascar, diurnal, highly social and matriarchal - fossil suggests lemurs arrived before island broke off. Tarsier, new world monkey (marmoset), hominoid (orangutan), old world monkey (patta"s monkey) Known for complex social system and intense parental care. Platyrrhines (new world monkeys) live in south and central america.
