WASHINGTON—She walked with a knock-kneed gait, with a heel like a chimp but the upright posture of a human, and she may provide the most complete evidence yet of early man's closest ancestor, scientists said Thursday. Two-million-year-old Australopithecus sediba's awkward strut would eventually send a modern man begging for a knee or hip replacement, but scientists are stunned at how evolution equipped her for both climbing trees and walking. The latest research on an unprecedented set of fossil bones from South Africa reveal an ancient creature with long arms and primitive shoulders like an ape, but legs that could straighten, dexterous hands and a human-...
Keep on reading: Fossils show ‘weird’ mosaic of chimp-human traits
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