Originally Posted by
Dibran
There is no aDNA for M458, so what it can or can't be, remains to be seen with sufficient aDNA evidence. Also, some basal M458 pops up in Caucasians, specifically Circassians like Adyghe and Shapsug, Karachay & Nogai. As I understand the major Russian invasion of their region wasn't until the 1800s. Karachay and Nogai are also heavily tribal and do not mix. Any number of possibilities exist at this point with no aDNA.
Central Europe was dominated by these steppe tribes. They also fucked like rabbits. I doubt any clade is exlusively anything until there is aDNA to show. If M458 pops up in Central Europe predating the migration event.
My personal opinion is that M458 is probably just Central Corded Ware and spread from around Poland/East Germany. I just find it very odd that we are supposed to believe M458 including its soon to develop clades were somehow locked behind some prison and randomly started only spreading out in the middle ages.
It occupied many areas in East Europe that could have easily been absorbed by any number of tribes occupying these geographical positions.
Some have said there is alot of R1a diversity around Romania, postulating it as a possible original point. But, I haven't seen any papers claiming such.