The Ice Age hit Europe hard

Major paper came to the bioarxiv last night: Nina Marchi et al., "The mixed genetic origin of the first farmers of Europe".

First: Western and Southeastern European H[unter]G[atherers] are shown to split during the LGM, and share signals of a very strong LGM bottleneck that drastically reduced their genetic diversity. The new Neanders, indeed!

Meanwhile, Near Eastern HGs were settling down to do some F-ing. No, not that, perverts; although, having more food and shelter, they were more able to do more of that too. The Near Easterners got to the Aegean, married (minimally) into some of those attenuated SEHGs, and moved north.

Anatolians, here, are not linked to the movement of farmers through the northern Med. They may have been east- and south-facing. Like Hittites in the Bronze Age, viewing their west as a dangerous nuisance.

Supposedly European and Near Eastern HGs mixed to create those Fs in Anatolia and the western Levant. Origin of the AfroAsiatic / HamoShemites? I know Semitic arose in near-historical times, especially if you do not count Akkad in their ranks. Anyway the Levant and Anatolian populations must have done all this separately since there are absolutely no AfroAsiatic elements in the first Anatolian / Caucasian languages of which I know: Kartuli, Hattic, Horite, Caucasian-Albanian. Even IndoHittite if you count that.

One inconsistency in the abstract: they have Europeans wash back to Anatolia and the Levant, shortly after the LGM which spells inter-Dryas, to me. 13 kBC, say. But weren't those Europeans precisely the Balkan Europeans whom the cold had almost wiped out?