Anthropology 100 Lecture Notes 6

Anthropology 100 Lecture Notes 6 - Haylee Davis...

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Haylee Davis Anthropology 100 Lecture Notes 6 REVIEW OF EARLIET HOMININS -Three possible genera -Ardipithecus, Orrorin, Sahelanthropus -Dated c. 7-4.4 mya -All from wooded habitats -Antatomical links to later hominins 1. Bipedalism 2. Non-sectional lower premoloars -Otherwise, very apelike 1. Large faces 2. Small brains 3. Thin enamel on cheekteeth 4. Relatively small cheekteeth Early Pliocene Hominins, Australopithecus anamensis (4.2-3.9), Australopithecus afarensis (3.6- 3.0) -All bipedal and alike in cranial morphology -A lot of climbing adaptations -*ANAGENESIS (no major splitting events) How is the genus Australopithecus distinguished from the earliest hominins and linked together as its own taxonomic group? -Megadontia (big teeth)-premolars and molars -Trend starts at 4.2 mya -Trend reaches its apex in a group of hominin forms collectively called the robust Australopithecines -The robust australopithecine swere a group of hominins which megadontia was taken to its extreme -Teeth increase in absolute size
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This note was uploaded on 03/24/2012 for the course ANT 100 taught by Professor Bowie during the Fall '11 term at Wisconsin.

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Anthropology 100 Lecture Notes 6 - Haylee Davis...

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