Apes%20and%20HumansA

Apes%20and%20HumansA - APES and HUMANS Superfamily...

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APES and HUMANS Superfamily: Hominoidea (all apes) Family: Hominidae (great apes) Subfamily: Homininae (African great apes) Tribes: Panini (chimpanzees, bonobos) Hominini (humans)
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APES and HUMANS – Skulls & Teeth Similarities of humans and African Great Apes same dental formula: 2-1-2-3 (2 incisors, 1 canine, 2 premolars, 3 molars) (all catarrhines – Old World Monkeys, Apes and Humans) Y-5 molar pattern (all hominoids) I I C P M
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APES and HUMANS – Skulls & Teeth Skulls – exactly the same bones Gorilla Chimpanzee
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APES and HUMANS – Skulls & Teeth Skulls – exactly the same bones Cranium – skull without mandible brain case, neurocranium or cranial vault = cranium without the face • splanchnocranium = face
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APES and HUMANS Differences – extant Homo vs. Pan, Gorilla Cranium & Mandible 1. Neurocranium (brain case) size and shape: - maximum cranial breadth: apes = low, at level of cranial base; hominins = higher, on braincase - mastoid pneumanization: apes = extensive, projecting; hominins = reduced
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APES and HUMANS Differences – extant Homo vs. Pan, Gorilla Cranium & Mandible 2. Cranial capacity (cm 3 ) Pan paniscus – 325 (284-363)
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