![]() There is fossil evidence that this species cared for old and weak individuals. Microscopic study of the teeth indicates that he grew up at a growth rate similar to that of a great ape. The most complete fossil individual of this species is known as the ‘Turkana Boy’ – a well-preserved skeleton (though minus almost all the hand and foot bones), dated around 1.6 million years old. Compared with earlier fossil humans, note the expanded braincase relative to the size of the face. These features are considered adaptations to a life lived on the ground, indicating the loss of earlier tree-climbing adaptations, with the ability to walk and possibly run long distances.
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