The discovery of a complete hominid skull and other fossil remains in Dmanisi, Georgia, suggests that the earliest members of the Homo genus -- currently split into half a dozen distinct species -- actually belonged to a single species: Homo erectus. These early human ancestors probably just had a wide range of physical appearances, say researchers in the journal Science. The skull is 1.8m years old and has a small braincase, a long face and large teeth, a combination of features not previously seen in other early Homo fossils.
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