Teeth Striations in <i>Homo habilus</i> Fossil (IMAGE)

University of Kansas

Teeth Striations in <i>Homo habilus</i> Fossil

Caption

David Frayer, KU professor emeritus of anthropology, is lead author on a recent study published in the Journal of Evolution that found striations on teeth of a Homo habilis fossil 1.8 million years old moved from left to right, indicating the earliest evidence in the fossil record for right-handedness. Researchers believe the marks came from using a tool to try to cut food being pulled from the mouth with the left hand.

Credit

David Frayer

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