Paleontologists have determined that Australopithecines,such as Lucy,could walk upright.On what evidence do they base this claim?

Name: Paleontologists have determined that Australopithecines,such as Lucy,could walk upright.On what evidence do they base this claim?
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Paleontologists base their claim that Australopithecines could walk upright on the structure of their pelvis. The pelvis of these hominins shows adaptations, such as the shape of the hip bones, indicative of bipedalism.

Paleontologists Have Determined That Australopithecines,such as Lucy,could Walk Upright