Abstract
If the genusHomo did indeed originate in Africa, then it must have spread by about 2 m.y. ago into Asia where it is represented at 1.8 m.y. ago byHomo erectus fossils. This latter species in turn eventually spread back into Africa, as indicated by the 1.4 m.y. old OH 9 calvaria from Olduvai, and into Europe, as indicated by the 800,000 year old Ceprano calvaria from Italy. These hominids are associated only with Oldowan style artefacts of cores, choppers and flakes and were apparently not conversant with Acheulean handaxe technology. It seems that they most probably evolved viaHomo heidelbergensis into the Neanderthals. Meanwhile, a completely separate development originating withHomo ergaster of about 1.7 m.y. ago in Africa and possessing Acheulean handaxe technology evolved via such forms as Ndutu and Steinheim intoHomo sapiens.
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Clarke, R.J. Out of Africa and back again. Int. J. Anthropol. 15, 185–189 (2000). https://doi.org/10.1007/BF02445133
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DOI: https://doi.org/10.1007/BF02445133