By Ann Gibbons
MINNEAPOLIS, MINNESOTA—Finding one partial skeleton of an ancient member of the human family is the rarest of rare discoveries in human evolution. So, paleoanthropologists murmured in surprise at a meeting here Saturday when South African researchers announced that they had found at least four individuals of a new species of early human, Australopithecus sediba.
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Senin, 25 April 2011
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