New data has emerged : unsurprisingly enough, a Neolithic farmer from Stuttgart clusters with other Neolithic farmers (Otzi and so on) whereas a Mesolithic hunter-gatherer from modern-day Luxembourg clusters with La Braña samples in Iberia, from Mesolithic times as well.
We now know that modern-day Europeans were born from the mixing of aboriginal hunter-gatherers and farmers coming from the Levant. The novelty of this article is that the authors believe a third layer is to be identified that they dub "Ancient North Eurasians" : the mixing may have appeared prior to the arrival of farmers.
I'm not competent enough on that issue to tell you whether they are right or not.I don't doubt ancient hunter-gatherers mixed with Siberians but I'm rather clueless about everything else.
What triggered my curiosity was the presence of a "French_South" sample popping for the first time in an official scientific study.
I checked in tthe supplementary information : that sample is made of 7 individuals (Lat : 43.4 Long : -0.6) and the source is : David Comas. Well, that's Béarn for you, my home area.
It explains the ADMIXTURE results quite well and why those "southern French" individuals appear to be so similar to Basque people (lacking in the yellow component at its maximum in the Caucasus). I believe dubbing such specific sample "French_South" is thus quite misleading.