September 29, 2015

Twitter in the Aurignacian?

Heh, why not?

The curious fact is that a flint stone engraving recently found in the Aurignacian layers of Cantalouette II (Dordogne, SW France) bears a striking resemblance to the logo of the social network, what is quite funny at the very least.

Otherwise it is a very impressive early artistic expression of a rare type (avians are not common in Upper Paleolithic rock art). The Cantalouette II site was a flint stone quarry used by groups of the area and Arkeobasque (which is my source) speculates that it could be an expression of "art for the sake of art", an artist's caprice with no further meaning but excellent and very unusual technique, that was probably abandoned after its execution.


  1. Hi Maju!,
    I think you will find plenty of Interesting stuff here.
    For Example I found this one.
    A New Model of Human Dispersal
    Trevor Underwood1
    Independent researcher
    This presentation examines previously unpublished allele counts obtained from the French-San-Neanderthal-Chimpanzee alignment of the high quality DNA sequence of a Neanderthal from the Altai Mountains [1]. This analysis indicates the existence of an unidentified third archaic ancestor of present-day Europeans, which diverged from its common ancestor with sub-Saharan Africans and Neanderthals around 900 thousand years ago. It also shows that the relative proportions of derived alleles of Neanderthals versus sub-Saharan Africans versus the third archaic ancestor, in the 0.0826% the European genome that is not shared with the common ancestor of humans and chimpanzee, are 13.6%, 32.3% and 54.2%, respectively. In addition, analysis of the also unpublished allele counts from the alignment of the 45 Kya fossil from Ust’-Ishim in western Siberia [2] and of the alignment of the 36.2 Kya Kostenki
    14 (Markina Gora) fossil from Kostenki-Borshchevo in European Russia [3] show similar relative proportions, suggesting that these individuals were closely related to the ancestor of present-day Europeans. These results differ significantly from previous estimates of the proportion of Neanderthal ancestry in present-day Europeans which range from 1.3% to 2.7% [1, 4, 5]. This presentation also identifies a mathematical error in the derivation of the admixture proportion estimators used to generate the previous estimates
    which explains this difference. The analysis of the allele counts together with anthropological and archaeological evidence suggests a new model of human dispersal based on a Eurasian lineage in the Levant, which admixed with Neanderthals between 250-55
    Kya as they expanded eastward, and subsequently with members or descendants of the African mtDNA haplogroup L3 after their emergence from Africa between 84-63 Kya. This was followed by radiation from a basal admixed population in the Levant from around 55-50 Kya, with no subsequent major contribution to the European genome. Ancestors of the Ust’-Ishim individual, a member of mtDNA haplogroup R, probably went northeast from the Levant into western Siberia around 47 Kya; and ancestors of the Kostenki 14 individual, a member of mtDNA haplogroup U2, probably moved northward from the Levant into the Central
    European Plain between 40-36 Kya. It is likely that other members of these hybrid populations with a morphology similar to present-day Homo sapiens, including mtDNA haplogroups N, R, U, U2, U8 and JT, expanded westward into Europe along the
    Danube and Mediterranean coast and replaced the already dwindling Neanderthal populations between 45-35 Kya, rather than newly emerged sub-Saharan Africans as has been assumed
    . If this new model of human dispersal is correct, it has profound implications for the interpretation of the anthropological and archaeological evidence, which has largely been framed within the Recent Out-of-Africa model.
    Acknowledgements: I would like to thank Nick Patterson and David Reich for assistance in providing the unpublished allele counts
    for the French-San-Altai Neanderthal-Chimpanzee alignment; Qiaomei Fu, Janet Kelso and David Reich for assistance in providing
    the Ust’Ishim-San-Altai Neanderthal-Chimpanzee allele counts; and Martin Sikora, Eske Willerslev and Robert Foley for assistance
    in providing the Kostenki-San-Altai Neanderthal-Chimpanzee allele counts.

    1. Alert: info overload!

      I took a look and the one that most called my attention is one about HV(xH,V) expanding possibly from South Italy. It's one of the first ones (Caramelli?) so it should be easy to find. Anyhow I strongly prefer specific full papers, abstracts can only tell so much.

      As for the one you mention, looks vaguely intriguing but I doubt that 0.08% of the modern genome is something that can be actually taken too seriously.

  2. Guys,
    Here is the full paper (unfortunately the link is not very private).

    1. So? Independent researcher who makes some claims with the help of lots of long equations, resulting in a most negligible results. IMO he should write a blog, or maybe should you, Nirjhar? I'm not excited at all.


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