Maciamo said:
1) R1a wasn't part of the cattle-herding Yamna culture.
So far it seems so, however, R1a was part of the cattle-herding Khvalynsk culture.
Such a comparison of R1a vs. R1b samples from the Eurasian steppe known to date:
The first sample of R1a in the steppe appears in Khvalynsk culture, alongside R1b:
Abbreviations used:
EHG = Eastern Hunter-Gatherers
EBA = Early Bronze Age
LBA = Late Bronze Age
[TABLE="class: grid, width: 500"]
[TR]
[TD="align: center"]Steppe culture:[/TD]
[TD="align: center"]R1a samples:[/TD]
[TD="align: center"]R1b samples:[/TD]
[TD="align: center"]Dates of samples:[/TD]
[TD="align: center"]Approximate location:[/TD]
[/TR]
[TR]
[TD="align: center"]Samara EHG
(other EHG)[/TD]
[TD="align: center"]0 (2)[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]5650-5555 BC[/TD]
[TD="align: center"]Samara region[/TD]
[/TR]
[TR]
[TD="align: center"]Khvalynsk[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]4700-3800 BC[/TD]
[TD="align: center"]Samara region,
Khvalynsk II[/TD]
[/TR]
[TR]
[TD="align: center"]Yamnaya[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]11[/TD]
[TD="align: center"]3340-2620 BC[/TD]
[TD="align: center"]Samara region,
Buribay, Elista[/TD]
[/TR]
[TR]
[TD="align: center"]Poltavka[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]4[/TD]
[TD="align: center"]2925-2200 BC[/TD]
[TD="align: center"]Samara region[/TD]
[/TR]
[TR]
[TD="align: center"]Stalingrad EBA[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]2857-2497 BC[/TD]
[TD="align: center"]Stalingrad Quarry[/TD]
[/TR]
[TR]
[TD="align: center"]Xiaohe Tomb complex[/TD]
[TD="align: center"]11[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]2558-1940 BC[/TD]
[TD="align: center"]Tarim Basin[/TD]
[/TR]
[TR]
[TD="align: center"]Potapovka[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]2469-1900 BC[/TD]
[TD="align: center"]Samara region[/TD]
[/TR]
[TR]
[TD="align: center"]Sintashta[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]2298-1896 BC[/TD]
[TD="align: center"]Orenburg,
Chelyabinsk[/TD]
[/TR]
[TR]
[TD="align: center"]Srubnaya[/TD]
[TD="align: center"]6[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]1850-1200 BC[/TD]
[TD="align: center"]Samara region[/TD]
[/TR]
[TR]
[TD="align: center"]Andronovo[/TD]
[TD="align: center"]3[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]1800-1298 BC[/TD]
[TD="align: center"]Barnaul, Uzhur,
Abakan[/TD]
[/TR]
[TR]
[TD="align: center"]Mezhovskaya[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]1598-700 BC[/TD]
[TD="align: center"]Kapova Cave[/TD]
[/TR]
[TR]
[TD="align: center"]Karasuk[/TD]
[TD="align: center"]2[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]1416-1261 BC[/TD]
[TD="align: center"]Altai Krai[/TD]
[/TR]
[TR]
[TD="align: center"]Altai Scythians[/TD]
[TD="align: center"]4[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]1371-1011 BC[/TD]
[TD="align: center"]Mongolian Altai[/TD]
[/TR]
[TR]
[TD="align: center"]Tanais Scythians[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]older than
1000 BC[/TD]
[TD="align: center"]Maeotia,
Azov steppe[/TD]
[/TR]
[TR]
[TD="align: center"]Afontova Gora LBA[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]926-815 BC[/TD]
[TD="align: center"]Krasnoyarsk region[/TD]
[/TR]
[TR]
[TD="align: center"]Tagar[/TD]
[TD="align: center"]6[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]800 BC -
100 AD[/TD]
[TD="align: center"]Khakassia, Krasnoyarsk[/TD]
[/TR]
[TR]
[TD="align: center"]Pazyryk[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]450 BC[/TD]
[TD="align: center"]Sebystei Valley[/TD]
[/TR]
[TR]
[TD="align: center"]Sabinka II
Iron Age[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]396-209 BC[/TD]
[TD="align: center"]Altai Krai[/TD]
[/TR]
[TR]
[TD="align: center"]Volga Scythians[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]380-200 BC[/TD]
[TD="align: center"]Balakovo region[/TD]
[/TR]
[TR]
[TD="align: center"]Tashtyk[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]100-400 AD[/TD]
[TD="align: center"]Khakassia[/TD]
[/TR]
[TR]
[TD="align: center"]Caucasus Alans[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]400-600 AD[/TD]
[TD="align: center"]Krasnyy Kurgan region[/TD]
[/TR]
[TR]
[TD="align: center"]Saltovo-Mayaki[/TD]
[TD="align: center"]1[/TD]
[TD="align: center"]0[/TD]
[TD="align: center"]800-900 AD[/TD]
[TD="align: center"]eastern part of
Belgorod Oblast[/TD]
[/TR]
[TR]
[TD="align: center"]TOTAL:[/TD]
[TD="align: center"]47 (2)[/TD]
[TD="align: center"]19[/TD]
[TD="align: center"]5650 BC -
900 AD[/TD]
[TD="align: center"]Eurasian steppes[/TD]
[/TR]
[/TABLE]
We can also add 2 Bronze Age R1b samples from the Armenian Plateau to this list (1906-855 BC).
Maciamo said:
2) R1a was already all over European Russia in the Mesolithic (also R1b for that matter, but not yet R1b-V88 and R1b-L23).
That R1a in European Russia was also not yet M198, but some more archaic clades, such as M420*, M459* and YP1272.
Well, maybe M198 was also present among some groups of EHGs - but it has not been found yet, AFAIK.
Maciamo said:
3) The R1a phylogeny started to explode downstream of M417 from 3500 BCE (TMRCA for M417 according to
Yfull), especially with the formation of the Z283 and Z93 subclades (formed c. 3000 BCE), which is far too recent for a Neolithic expansion.
According to Genetiker, many R1a samples in German Corded Ware were xZ645 - perhaps CTS4385, L664, M417*, M198*.
It seems that some clades of R1a which are rather rare today, could be more numerous in the past. Maybe even M198*.
I was surprised by such results. It now seems that R1a-L664 in Western Europe all came from Western Corded Ware.