Smithsonian Magazine on MSN
New Fossil Analysis Suggests This Seven-Million-Year-Old Primate Walked on Two Legs, Potentially Making It the Oldest Known Human Ancestor
Fresh findings about arm and leg bones advance the debate over whether Sahelanthropus tchadensis was bipedal, but not ...
In 1998, paleoanthropologist Ronald Clarke and his research team discovered the skull of a previously unknown human ancestor ...
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