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Genetic Closeness of the East/West African SNP population clusters (blog source)
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[QUOTE]Originally posted by Dead: [QB] Very true, but there is another interpretation. The reason for the lack of sub-regional craniometric continuity, or geographical structure [i]within[/i] Africa throughout the Pleistocene was the result of the very large population size resident there, hence morphology was always heterogeneous and not homogenous, i.e. easily distinguishable like in peripheral Europe or Northeast Asia (through genetic drift and much smaller population sizes). However it is interesting to note that the Cape or southern coast of South Africa had the smallest population in Pleistocene Africa and so there might be some limited regional continuity there in the fossil record from the Middle/Late Pleistocene to Holocene (recent) San or Khoisan: "The earliest good evidence for what might be a distinct pattern of regional evolution in Africa is an example of centre and edge in a more limited application. This evidence may well be at an African periphery - in this case, along the southern Cape." (Wolpoff & Caspari, 1997) There were a couple of studies from the 70s/80s, showing a close similarity between certain dimensions of Khoisan post-crania/crania to the [URL=http://en.wikipedia.org/wiki/Klasies_River_Caves]Klasies[/URL] remains, stretching back possibly to [URL=http://en.wikipedia.org/wiki/Border_Cave]Border Cave[/URL] and even [URL=http://en.wikipedia.org/wiki/Saldanha_man]Saldanha man[/URL]. In two multivariate studies Rightmire (1979, 1981) found Border Cave 1 was closest to Bushman and Hottentot male centroids, this was supported by Campbell (1984). Earlier Drennan and Singer (1955:365) felt that Saldanha 2 preserved the proportions of "Bushman, Hottentot and pre-Khoisan jaws." More recently Wolpoff (1996, 1999)has discussed the skeletal continuity in the Klasies post-crania, which he links to Khoisan. The hypothetical fossil sequence would be: Saldanha > Border Cave > Klasies > Khoisan (San) [/QB][/QUOTE]
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