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New remains demonstrate adaptability of this precursor to early humans.

Old and new finds come together to deepen the record of human evolution at the famous South African cave system.

Australopithecus afarensis arm bones were strong relative to leg bones; walking gait was likely inefficient.

Pliocene epoch fossils found at Dikika, Ethiopia, bear stone tool butchery marks, suggest scientists.

Early hominin species is 1 million years older than scientists previously thought.