Image: Leg of Australopithecus afarensis

Leg of Australopithecus afarensis

This diagram shows the femur (leg bones) which has the same shape and structure as that of modern humans, but it is a little shorter. It subtends the same angle at the knee as that of a modern human and the inner bump of the knee joint is larger than the outer one. This shows that this hominid was also a bipedal walker.

Helen Beare
© Australian Museum

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