tag:blogger.com,1999:blog-7785493.post1045615512883744397..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Chris Stringer video on BBC on Iwo Eleru skullsDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7785493.post-7272377871718206582011-09-17T04:07:19.392+03:002011-09-17T04:07:19.392+03:00"Moreover, if modern humans did originate in ..."Moreover, if modern humans did originate in Africa ~200ka, then why did they admix with archaic Africans only ~35ka (per Hammer et al. 2011) and had not replaced archaic Africans even ~13ka?"<br /><br />An admixture date starting ca. 100kya to 70 kya, roughly when Khoisan and Pygmies would have diverged to the point that they became distinct populations, and replacement of archaic Africans in a similar time frame to that observed in Europe would certainly seem more plausible to me. Since this is pretty much one study's data point in dates (by a largely unproven method) and uses only a single methodology, it is surely the least robust date of the lot.Andrew Oh-Willekehttps://www.blogger.com/profile/02537151821869153861noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-67191078173033596812011-09-16T20:36:33.898+03:002011-09-16T20:36:33.898+03:00"Moreover, if modern humans did originate in ..."Moreover, if modern humans did originate in Africa ~200ka, then why did they admix with archaic Africans only ~35ka (per Hammer et al. 2011) and had not replaced archaic Africans even ~13ka?"<br /><br />IMO, the answer is simple: modern humans who are our ancestors entered Africa around 40,000 years ago and in some areas admixed with pre-existing hominids, who showed their own set of archaic/modern features. People assumed that the so-called AMH in Africa must be our ancestors but how do we know this for sure? There are no DNA samples. What if these African hominids, who were behaviorally Mousterian, were completely replaced in Africa by 10K years just lie Neandertals were replaced in Europe by 40,000 years? There was no exodus out of Africa, but only a migration into Africa. Another useful skull is South African Hofmeyr at 36,000 that clustered with UP Eurasians. F. E. Grine, FE; R. M. Bailey, K. Harvati, R. P. Nathan, A. G. Morris, G. M. Henderson, I. Ribot, A. W. G. Pike (12 January 2007). "Late Pleistocene Human Skull from Hofmeyr, South Africa, and Modern Human Origins". Science 315 (5809): 226–229.German Dziebelhttps://www.blogger.com/profile/10703679732205862495noreply@blogger.com