Researchers say a 3.4 million-year-old fossilized foot found in Ethiopia did not belong to a member of Australopithecus afarensis, the hominin species of our early upright-walking ancestor "Lucy", but to a tree-climbing hominin cousin with whom she and her relatives co-existed. They write about how they came to this conclusion in the 29 March online issue of Nature. The fossil of the partial foot was found in 3...
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