The fossilized skeleton of "Lucy," a hominin who lived between 2.6 and 3.3 million years ago,reveals that she moved around in a fully human manner.

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Studies of Lucy's fossilized remains suggest that she walked upright on two legs, with a gait similar to that of modern humans. This suggests that hominins had fully adopted bipedalism as their primary mode of locomotion by this time.

The Fossilized Skeleton of "Lucy," a Hominin Who Lived Between