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

Researchers have discovered what they regard as the oldest known fossil from the human genus, Homo.