class_5_2010_for_web

class_5_2010_for_web - 1 IB35 Human Biological Variation...

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Unformatted text preview: 1 IB35 Human Biological Variation Class #5 Topics for today: Homo erectus & Neanderthals How much were they like us? Ardipithecus 5.7 – 4.4 million years J. Mat ernes The Characteristics of Hominid Genera Hominidae = all members of the human family tree since the split with chimpanzees Australopithecus • 4.2 – 2.5 mya • We know the most about Australopithecus afarensis (4.2 – 3.5 mya) chimpanzee human A. afarensis chimpanzee human A. afarensis 2 Laetoli, Tanzania 3.6 million years ago Characteristics of Australopithecus • Bipedal • Brain size like modern great apes • Large teeth • Relatively small canines • Fast growth rates Key Events… Key Events… Bipedal Bipedal 6.0 6.0 mya mya Loss of honing complex Loss of honing complex 6.0 6.0 mya mya Reduced canine dimorphism Reduced canine dimorphism 4.4 4.4 mya mya Regular use of modified stone tool Regular use of modified stone tool 2 6 2 6 mya mya Regular use of modified stone tools Regular use of modified stone tools...
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This note was uploaded on 11/26/2010 for the course IB 35AC taught by Professor Hlusko during the Spring '08 term at Berkeley.

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class_5_2010_for_web - 1 IB35 Human Biological Variation...

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