Go East, Young Neanderthal

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Map of newly extended certainty of Eurasian Neanderthal range. From Nature

It has for some time been difficult to assess the eastern limit of classic “Neanderthals.” Some have claimed that Neanderthals were limited to western Asia, others that they extended across much of Asia. The fossil remains themselves have been difficult to interpret. One reason for this is that Neanderthals are not different enough from other contemporary hominids to assert a similarity or difference for a particular fossil, unless you have enough of it, and the fossil record in Central Asia and East Asia for the relevant time period is a bit dicey. Most people agree that fossil material known from Uzbekistan is Neanderthal. That’s not very far east. Beyond that, there is only controversy and mystery.

Until now, perhaps…


A repost

A study about to be released in NatureKrause, Johannes, Ludovic Orlando, David Serre, Bence Viola, Kay Prüfer, Michael P. Richards, Jean-Jacques Hublin, Catherine Hänni, Anatoly P. Derevianko & Svante Pääbo. Neanderthals in central Asia and Siberia. Nature advance online publication 30 September 2007 | doi:10.1038/nature06193; Received 15 March 2007; Accepted 23 August 2007; Published online 30 September 2007 provides a new way of examining this question. Johannes Krause and a cast of nine authors, including Mr. Ancient DNA himself, Svante Paabo, have looked at ancient mitochondrial DNA of fossil material in the Altai region of Siberia. This material is from the later period of Neanderthal, between about 45 and 35 thousand years ago. This material has been argued to be Neanderthal, ante-Neanderthal, derived from Neanderthal, late Homo erectus, and probably (though I’m not sure) modern human.

The localities in question are known as Teshik Tash and Okladnikov. The resarch teme took material from postcranial material to compare with the currently known sample of 13 European Neanderthals. This previously studied sample, in turn, is known to be genetically distinct from modern humans to the extent that modern humans contemporary with Neanderthals, and the Neanderthals, should be considered as distinctly different populations. (You can decide that this means that they were different species if you want. Or not. Either way you have a reasonable chance of being right. Or wrong.)

The results of this research indicate that the Altai material belongs to the Neanderthal population.

The research team concludes:

The similarity of the Okladnikov and Teshik Tash mtDNA sequences to mtDNA determined from Neanderthals in Europe and the Caucasus, in conjunction with the absence of Neanderthal-like mtDNA from the more than 10,000 modern humans studied so far as well as from early modern humans, indicates that the Teshik Tash and Okladnikov individuals belonged to a population related to European and western Asian Neanderthals. This agrees with morphological evidence that the Teshik Tash hominid is of Neanderthal origin and the suggestion that the subadult Okladnikov individual is related to Neanderthals on the basis of the morphology of teeth found in association with the bones8. The geographical range of Neanderthals therefore seems to have extended at least 2,000 km farther east into southern Siberia than has generally been assumed.

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5 thoughts on “Go East, Young Neanderthal

  1. This isn’t exactly new news. I think I saw something about it back about the time the Nature piece was published. And there have been at least hints about this before that.
    Anne G

  2. Anne: This is a repost. It is not new news. But, I beleive that just because something is a year or two old, it is not unimportant. I like picking out the stories form a year or two ago and reposting the ones that are still interesting. Lest we forget.

  3. You can decide that this means that they were different species if you want. Or not. Either way you have a reasonable chance of being right. Or wrong.

    Not even.

    There are 147 different definitions of “species” out there, and they all lead to different results, except the word “species”. Depending on the definition, there are from 101 to 249 endemic bird species in Mexico, for instance.

    Some, perhaps many, of those definitions apply to biologically interesting entities. But calling them all “species” is an exercise in philosophical nominalism.

  4. Oops: “and they all lead to different results, because they have nothing in common except the word ‘species’.” I’ll go to bed.

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