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Lecture 39

ANTH 1210 Lecture 39: Lecture 39

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ANTH 1210
Haskel J.Greenfield

OS98 Great fossil deposits Anthropoid example Aegyptopthecus: Pithecus (ape) Large canines sexual dimorphism Early Anthropoids Small First and insect eating Treedwelling Quadrupeds Distinctly Anthropoid features appear: Deemphasis on small Emphasis on vision New dental formulas Limbs adapted to quadrapedal leaping and climbing (like modern monkeys) Beginning Anthropoidea flourish End Hominoidea first appear Miocene: 235 MYA Cooler and drier grasslands spread in middle latitudes Major radiations of grazing mammals Hominoidea flourish and diversity Beginning first small apes Middle then larger apes Dryopithecines End earliest appearance of Hominins (humans) Dryopithecus: Proconsul africanus type specimen for Dryopithecus 21 MYA Dental formula changes Hominoid: lose 1 premolar 2123 all have same dental pattern (humans, gorillas and chimps) Anthropoids: 2133 Hominoid teeth pattern Y5 molar Terms: Hominoids: all apes and humans Hominids: great apes and humans Homininae: only African branch Hominini: chimps and humans Primate Evolution and Environment Change: Tethys Sea Ancestor of Mediterranean
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