14-32 - Anthropology lectures 2.4.09 Australopithecines...

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Anthropology lectures 2.4.09 Australopithecines East African Australopithecines A. anamensis o Oldest to date (c. 4.3-3.9 mya) o Found in Kenya o Very little evidence A. afarensis o Found in Ethiopia and Kenya o Dates: 3.9-2.9 mya (K/Ar) o Bones of 60 individuals so far o Sexually dimorphic o Brain size c. 420 cc o Combination of ape and human features Torso (ancestral) Relatively long arms (ancestral) Large jaws (ancestral) Parallel teeth rows (ancestral) Diastema present (ancestral) o Lucy o “Lucy’s baby” (3.3mya) Central African Australopithecines A. bahrelgazali o Very little evidence o About 3.5-3 mya
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o The only Australopithecus discovered in central Africa (chad) so far South African Australopithecines Dating problems o Unclear stratigraphy o Lack of volcanic deposits Most sites dated to about 3-2.3 mya One specimen from the cave dated to about 3.5 mya using paleomagnetism A. africanus = Taung Child Robust Australopithecines Found in both south and east Africa
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This note was uploaded on 04/18/2011 for the course ANTH 105 taught by Professor Tankosic during the Winter '09 term at Indiana.

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14-32 - Anthropology lectures 2.4.09 Australopithecines...

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