New discoveries of Australopithecus and Homo from Ledi-Geraru, Ethiopia

These specimens suggest that Australopithecus and early Homo co-existed as two non-robust lineages in the Afar Region before 2.5 million years ago, and that the hominin fossil record is more diverse than previously known. Accordingly, there were as many as four hominin lineages living in eastern Africa between 3.0 and 2.5 million years ago: early Homo, Paranthropus, A. garhi, and the newly discovered Ledi-Geraru Australopithecus.

Those who refuse to embrace diversity are denying our heritage. The fact is that diversity is an evolutionary necessity. Uniformity leads to extinction even though extinction is inevitable no matter what.

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