Scientists said Ardi, short for Ardipithecus ramidus, was the earliest known skeleton from the human branch of the primate family tree.
By JOHN NOBLE WILFORD, New York Times
Thu, 10/01/2009 - 7:43am
Scientists said Ardi, short for Ardipithecus ramidus, was the earliest known skeleton from the human branch of the primate family tree.