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Dates of contention

Science News,  August 12, 2006  by David Adams

Are the dates quoted in "Stones of Contention: Tiny Homo species tied to ancient tool tradition" (SN: 6/3/06, p. 341) correct? I didn't think Homo existed as a genus 840,000 years ago.

DAVID ADAMS, BOOTHWYN, PA.

Fossil finds indicate that the Homo genus originated roughly 2.4 million years ago.--B. BOWER

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