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Where Lived: Eastern Africa (Lake Turkana, Kenya and Middle Awash, Ethiopia)

When Lived: About 4.2 to 3.9 million years ago

Australopithecus anamensis has a combination of traits found in both apes and humans. The upper end of the tibia (shin bone) shows an expanded area of bone and the orientation of the ankle joint in human-like, indicative of regular bipedal walking (support of body weight on one leg at the time). Long forearms and features of the wrist bones suggest these individuals probably climbed trees as well.

Unreviewed

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© Human Origins Program

Supplier: Human Origins Program NMNH

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