Lecture26_Humans - Human evolution I. Evolution of apes Old...

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Human evolution I. Evolution of apes Old world Gibbons Orang Gorillas Human Bonobo Common monkeys W. E. chimp • Gibbons and orangutans are native to gorillas and chimps native to • orangs = mostly fist walking, gorillas + chimps What did the ancestral population at * (6-7 mya) look like? walking? social? food? habitat? tools? hunting? culture? consciousness?
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III. Human evolution: The fossil record A. From then until now … The gracile australopithecines Australopithecus afarensis 3.9-3.0 Ma • Braincase: cm 3 • F: m; M: m • Square jaw (ape-like) • Africa Australopithecus africanus 2.8-2.4 M • Braincase: cm 3 • F: m; M: m • Round jaw ( H.sap -like); large teeth, jaws • South Africa “Robust australopithecines” Paranthropus aethiopicus 2.7-1.9 Ma • Braincase: cm 3 • F: m; M: m • Sagittal crest • Kenya
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Paranthropus boisei 2.3-1.4 Ma • Braincase: cm 3 • F: m; M: m • Molars 4x H. sapiens • Kenya Paranthropus robustus 2.0-1.0 Ma • Braincase: cm 3 • F:
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Lecture26_Humans - Human evolution I. Evolution of apes Old...

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