2007/08/09

Fossils in Kenya Challenge Linear Evolution



Two fossils found in Kenya have shaken the human family tree, possibly rearranging major branches thought to be in a straight ancestral line to Homo sapiens.
Skull

In their report, Dr. Spoor and his colleagues wrote, “With the discovery of the new, well dated specimens, H. habilis and H. erectus can now be shown to have co-occurred in eastern Africa for nearly half a million years.” The fact that the two hominid species lived together in the same lake basin for so long and remained separate species, Meave Leakey said in a statement from Nairobi, “suggests that they had their own ecological niche, thus avoiding direct competition.”

Date Line of Evolution

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Fossils in Kenya Challenge Linear Evolution


By JOHN NOBLE WILFORD
Published: August 9, 2007
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