Pushing Back Erect Posture
As Duma, Ethiopia -- Scientists here have found the fossil remains of nine hominids dated to between 4.5 and 4.3 million years ago. Mostly teeth and jaw fragments, the finds also include a pedal phalanx (foot bone), the examination of which confirms that this species of early hominid, called Ardipithecus ramidus, walked upright. Scientists suggest that this species may be the forerunner to the Australopithecus group, a type of early hominid that was ancestral to later humans, such as Homo Erectus and Neanderthal Man.
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