Basal Eurasian discussion

[Jerome]

If CF is crown Eurasian then DE must be basal eurasian and their ancestors (proto-eurasians) should be CT.
The confusion regarding ANA and taforalt can be cleared with the fact that a)ANA wasn't African proper and instead seems to be an early split from the proto Eurasian group ,it should also be closer to proto eurasians than to east Africans like mota


B)ANA likely had mixed with back-migrating E carrying basal eurasians before the iberomaurusian profile formed.
So the E in IBM could be from the basal part,for all we know.
We need more samples to discern these things but still it's a plausible theory.


Considering that CF and D are almost fully Eurasian ,I find it too much of a stretching to say that CF and D left africa leaving only E rather than simply say CF and DE were born somewhere on the border of Eurasia and Africa (probably sinai,NW Saudi arabia) and then E stayed with the basal Eurasian group and later mixed with Africans while D went alongwith crown Eurasian groups.

The original African groups would be subclades of A0,A,BT and B and got E after basal Eurasian introgression around 50k BC(there was a study which mentioned that the minor Neanderthal alleles in modern Africans date to this period 50-40k BC).
This is the study http://dx.doi.org/10.1016/j.cell.2020.01.012
This theory is supported by the fact that the most archaic Africans with early splits seem to be A and B like ju hoang and biaka while those near Eurasia/Nile Valley seem to be E (east Africans).
E in west Africans seems to be very recent with most TMRCA dating after LGM and mostly afterr Holocene.

Instead of searching for basal Eurasian in the Persian gulf which was surrounded by Neanderthals(shanidar,zarzi,warsawi,wezmeh) and where there are barely any sites in MIS-5/MIS-4 ,we should instead look for basal Eurasian on the border/periphery of Africa and Asia,that is,somewhere in Sinai,Nile valley,Libyan coast or NW Saudi arabia/upper hijaz where the basal split likely happened (if we consider that the emiran people of levant were crown Eurasian like,(emiran->bohunician°>bacho kiro ) ,then we would expect basal eurasians to be a bit westwards from the levant and probably in Nile valley,Libyan coast.

E in natufians could be from the basal Eurasian+ANA mixed Taforalt group or b)could be from the original basal Eurasian admixture in kebarans.
We need more samples to clarify this, especially from paleolithic levant/kebarans.
Epi paleolithic north levantines should work for this job too.

Latitude may truely distinguish the Ust-Goyet lineage and East Eurasian lineage. But I think that their common ancestor (Crown/C-K meta population) arose in eastern Iran Plateau. Anyway, AASI and Australasians should all head south, since they don't have the northern Denisova admixture (D0).

Interesting,does this mean AASI and southern east eurasians didn't take the central asia->altai->amur->south path?

Most people had been thinking this.