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Ancient jaw may hold clues to origins of human genus

Evolutionary identity of 2.8-million-year-old fossil still in question

partial jaw fossil

EVOLUTION’S BITE  A researcher holds a 2.8-million-year-old partial jaw near where it was found in Ethiopia. The fossil’s discoverers say it represents the earliest known member of the human genus, Homo.

Kaye Reed

By Bruce Bower

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