some anthropological metric and not metric surveys seem confirming this southern not only cultural but also demic influence of southern people North the Caucasus upon steppic population (who were the first I-E'ans ?)
Craniological and dental signatures of Out-of-Armenia

From the paper on the craniological results:One can see a clear link between the Armenian highlands samples and the Western Europe samples (the Arcvakar sample - 17 close phenetic links are revealed). The samples from the Georgia (Samtavro /Late Bronze Age - II period) and Iran (Tepe Gissar III), Uzbekistan (Sapallitepe) are identified as the samples with closest affinities samples from Ukraine (Shirochanski) and Poland, Germany (Corded Ware culture) in particular (figure 3). This suggests that some of the European genes do actually stem from this area. So, mediterranean connections from Armenian highlands, Georgia and Central Asia are distinctly fixed in Western Europe and in the Middle-Late Bronze Age.
&: erreur ? Eastern Europe ???... non !!! Cordés d' Allemagne !
If true, it is suggested that the dispersal of the Indo-European languages have been accompanied by migration and some gene flow from the Armenian highlands homeland to the various historical seats of the Indo-European languages. The different rates of genetic drift and external gene flow may have contributed to the morphological differentiation and diversification amongst the different Eurasian populations. Cluster analysis has revealed a craniological series having analogies (on a complex of craniometric, odontologic characters) with representatives of the population of the Armenian highlands, the Caucasus, the Near East and Central Asia. The initial starting area (or one of the intermediate areas), as indicated by the anthropological data, would seem to be the Armenian highlands, and the Caucasus as a whole (Figure 7).
Asian Culture and History Vol. 4, No. 2; July 2012
doi:10.5539/ach.v4n2p48
Bioarchaeological Analysis Mutual Relations of Populations Armenian Highlands and Eurasia Using Craniological and Dental Nonmetric Traits
Anahit Yu. Khudaverdyan1 Institute of Archaeology and Еthnography National Academy of Science, Republic of Armenia
metric surveys estimate a so called "armenian highlands" population (physical componant) were present among the steppic north-Caucasus cultures like Maikop, leaving traces among all I-E population of Western Europe, AND TOO, among the Tripolje-Cucuteni culture settlements
here this abstract from Dienekes blog I think
here an other abstracts (from Dienekes blog I think). June 27, 2013
Analysis of Maikop crania (Kazarnitsky 2010)

From the paper, first a survey of other studies:The Maikop cranium from Mandzhikiny I in Kalmykia was measured by A.A. Khokhlov. In his view, it resembles the previously published Maikop and Novosvobodnaya specimens. Khokhlov pointed to certain features common to the Maikop and Novosvobodnaya people and opposing them to the Pit Grave people. He questioned the resemblance between the Maikop crania from Evdyk I and those from Syezzheye and Zadono-Avilovsky; and he believed the former to resemble crania from the Caucasus, the Near East, and Southwestern Central Asia, being closest to those from Samtavro, Georgia, and Ginchi, Dagestan (Khokhlov, 2002).
In a brief note, M.M Gerasimova, D.V. Pezhemsky, and L.T. Yablonsky (2002) described several Maikop crania from burial grounds on the Kalaus River in the Stavropol Region. The series is diverse and, judging by the results of multivariate analysis, is closest to the Chalcolithic group from Khvalynsk in the Samara Region.
T.I. Alekseyeva (2004) measured a male skull from mound 13 burial 5 at Nezhinskaya near Kislovodsk (the plastic reconstruction of this individual’s appearance was made by L.T. Yablonsky), as well as two crania (male and female) from mound 70 burial 1 at Zamankul in Northern Ossetia. All these crania came from “Maikop– Novosvobodnaya” burials and were attributed to the Mediterranean variety of the Southern Caucasoid type which was distributed in Armenia, Georgia, Iran, and Mesopotamia during the Chalcolithic and Early Bronze Age. The heterogeneity of the Maikop group in Alexeyeva’s opinion may be due to individual variability, but also to admixture with the natives of the southeastern European steppes (Alekseyeva, 2004).
Later, Gerasimova, Pezhemsky, and Yablonsky (2007) published a large article where crania from burial grounds on the Kalaus River were described in detail. They noted that the Maikop series is heterogeneous but on average it represented the Eastern Mediterranean trait combination. The latter is quite dissimilar to the Cromagnoid combination typical of certain Bronze Age groups of the Eastern European steppes. The idea that at least some Maikop people were descendants of immigrants from the Near East was deemed probable; however the role of the steppe admixture, possibly accounting for a somewhat greater robustness of Maikop crania compared to Mediterranean ones, was not excluded either.
And the author's own conclusions:In sum, the results of the multivariate analysis suggest that Maikop people are distinct from all the contemporary and later Eastern European groups of the steppe and forest-steppe zones. This provides an additional argument in favor of the hypothesis that Maikop burials in Kalmykia attest not merely to the cultural impact of the Maikop community on the steppe tribes (Munchaev, 1994: 168); rather, they were left by a separate group which