ANTH 1001 : Anthro Test 3
Document Summary
Hypotheses for bipedality: freeing up the hands, man the hunter , make weapons, tools, and hunt, women the gatherer , collect, and gather up food. Keeps the home area clean: better view of open country, spot predator, food, and nesting areas better, energy efficiency, takes less energy to move longer distances, don"t move as fast. A very hard cement like matrix of sand, pebble, and soil. East africa specie it"s a small brain species: 375-450 cc. Small sagittal crest: some don"t have it at all. Moderate to large super orbital torus fairly robust nuchal crest. Not very tall large canine teeth: 3. 5ft to 4ft. Lucy (al-288-1) femoral neck is longer: 1974 don johansson. Selam : nearly complete individual, 3-4 years old, child, dates to about 3. 4 mya, not associated with lucy at all. Laetoli: in tanzania, dates to 3. 5 myo, found 80ft long of bipedal foot prints, a. africanus 3-2 mya.
