Dawn of man: Ethiopian jawbone fossil pushes back human origins

March 4, 2015 6:28 PM

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WASHINGTON (Reuters) - A 2.8-million-year-old jawbone fossil with five intact teeth unearthed in an Ethiopian desert is pushing back the dawn of humankind by about half a million years.

Scientists said on Wednesday the fossil represents the oldest known representative of the human genus Homo and appears to be a previously unknown species from the human lineage's earliest phases.

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