14-48 - Early australopithecines (a. afarensis) Lucy 1....

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Early australopithecines (a. afarensis) “Lucy” 1. Geographical setting (ie the types of environments they inhabited and their geographical distribution Various east African sites. T 3.8-3.0 million year old.T Ethiopia and Tanzania. T A fully bipedal a. afarensis found at Hadar. H Moist, mosaic environment composed of woodlands and grasslands, with permanent water nearby B 2. Appearance (body size, prominent facial features) Modest increase in brain size from around 400 cubic centimeters four million years ago to five hundred cubic centimeters two million years later. SA Big brained, big faced bipedal species. T Bipedal, ape-size brains, large, thickly enameled teeth in strong jaws, with nonprojecting canines. H Males typically larger than females, and individuals grew and matured rapidly. H Delicate bone known as hyoid, which helps anchor the tongue and the voice box. It’s morphology suggests that a. afarensis has a chimplike voice box. B
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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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14-48 - Early australopithecines (a. afarensis) Lucy 1....

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