Jawbone Fossil Fills a Gap in Early Human Evolution

A recent discovery has vaulted evolutionary science over a barren stretch of fossil record between 2 million and 3 million years ago—a time when the human genus, Homo, was getting underway. The 2.8-million-year-old jawbone of a Homo habilis predates by at least 400,000 years any previously known Homo fossils. More significant, scientists say, is that this H. habilis lived only 200,000 years after the last known evidence of its more apelike predecessors, Australopithecus afarensis, the species made famous by “Lucy.” whose skeleton was found in the 1970s at the nearby Ethiopian site of Hadar. 

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