The first Aryan

Peschanitsa R1a: PES001 comes from a burial site in what is now northwestern Russia and is dated to a whopping 10785–10626 calBCE. I'm not surprised to see him so early; Mal'ta Boy was older than that and already R (and not Q).

For reference the great Russian icefields had been melting before that... but were about to stop melting. Younger Dryas was 10800-9500 BC - contemporary. It was gettin' chilly up there, and would stay chilly.

During this cold millennium-and-change the Upper Khvalynian Choresmian Transgression ended 10500-000 BC [UPDATE 12/1 finetunes]. During the great false spring, the Khvalynian (Caspian) sea had been (much!) bigger, draining into the Euxine well north of the Caucasus. That would have kept the sundry R's out of the Caucasian piedmont and, one assumes, from transUralic Asia generally. The Finno-Ugric Urheimat (as N) was, of course, transUralic.

Absolutely no way this d00d was speaking anything remotely post-Indo-European. Although we will entertain that his tribe contributed to the protolanguage.