Who was the Ust Ishim

[tamilgangster]

http://www.academia.edu/8920635/Genome_sequence_of_a_45_000-year-old_modern_human_from_western_Siberia


A common model for the modern human colonization of Asia assumes that an early coastal migration gave rise to the present-day people of Oceania,while a later more northern migration gave rise to Europeans and mainland Asians.The fact that the 45,000-year-old individual from Siberia is not more closely related to the Onge from the Andaman Islands (putative descendants of an early coastal migration) than he is to present-day East Asians or Native Americans (putative descendants of a northern migration)shows that atleast one other group to which the ancestors of the Ust’-Ishim individual belonged colonized Asia before 45,000 years ago. Interestingly, the Ust’-Ishim individual probably lived during a warm period that has been proposed to be a time of expansion of modern humans into Europe.However,the latter hypothesis is based only on the appearance of the so called Initial Upper Paleolithic industries, and not on the identification of modern human remains It is possible that the Ust’-Ishim individual was associated with the Asian variant of Initial Upper Paleolithic industry,documented at sites such as Kara-Bom in the Altai Mountains at about 47,000 years BP.This individual would then represent an early modern human radiation into Europe and Central Asia that may have failed to leave descendants among present-day populations

This paper is saying that Ust-Ishim represented a migration seperate from the original OOA and the one that gave birth to east or west eurasian. This migration did not leave any descendents in pure form. Both ANE and WHG most likely had admixture from this lineage.

http://www.anthrogenica.com/showthread.php?2675-Ust-Ishim-had-mtdna-hg-R-of-some-sort-and-that-is-verified&highlight=ishim

All these tests show Ust Ishim as a "mix" scattered between different populations. Implying it is not related to any modern population. Also the fact it has visible levels of african admixture and even contains west african component implies that it might predate basal eurasian split.

[parasar]

http://www.academia.edu/8920635/Genome_sequence_of_a_45_000-year-old_modern_human_from_western_Siberia



This paper is saying that Ust-Ishim represented a migration seperate from the original OOA and the one that gave birth to east or west eurasian. This migration did not leave any descendents in pure form. Both ANE and WHG most likely had admixture from this lineage.

http://www.anthrogenica.com/showthread.php?2675-Ust-Ishim-had-mtdna-hg-R-of-some-sort-and-that-is-verified&highlight=ishim

All these tests show Ust Ishim as a "mix" scattered between different populations. Implying it is not related to any modern population. Also the fact it has visible levels of african admixture and even contains west african component implies that it might predate basal eurasian split.

As you can see the same paper says:

The finding that the Ust’-Ishim individual is equally closely related to present-day Asians and to 8,000-to 24,000-year-oldindividuals from western Eurasia, but not to present-day Europeans, is compatible with the hypothesis that present-day Europeans derive some of their ancestry from a population that did not participate in the initial dispersals of modern humans into Europe and Asia

If he had been prior to the basal split that exception to Europeans would not be there.

[BMG]

So did basal eurasian group expanded much later than the Ust-Ishim related people? And where exactly these basal eurasians went to ?

[Megalophias]

There is nothing in that paper saying he comes from a different Out of Africa migration. He is descended from the same population that WHG, ANE, and ENA come from, but not Basal Eurasian.

They couldn't tell whether his population was a branch of Crown Eurasians that just died out, or whether they did make some contribution but Ust'-Ishim is too early and undifferentiated to tell.

[parasar]

So did basal eurasian group expanded much later than the Ust-Ishim related people? And where exactly these basal eurasians went to ?

I think we need to wait and see what turns up from the Mediterranean to South Asia. My inclination is that the so called Basal is somewhere to be found in this zone. The Basal split can be as little as 5k years before Ust-Ishim. If it is just 5k years before it is between M89 and M526.