Unformatted text preview: considerably larger than females, brains were the same size as those of modern apes, and their offspring developed rapidly like modern apes-this creature links the apes of the Miocene to the earliest members of the genus Homo Bipedalism-hypotheses as to why it was favored by natural selection: 1. efficient form of locomotion on the ground 2. allowed hominins to keep cool in heat stress 3. bipedal locomotion leaves the hands free to carry things 4. bipedal posture allows efficient harvesting of fruit from small trees Adaptations to seasonality 1. Robust species may have developed processing apparatuses to chew tough plants (Paranthropus) 2. Less robust species may have shifted to a more omnivorous diet....
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- Winter '98