Chapter 13 is based off a research paper by Scott, Anta, Schomberg and de la Rua looking at historic and modern Basque dental classification compared against all others, particularly Eurodonts.
Not surprisingly, the modern Basques are closer to Santa Marians (who are Basques from a Cathedral crypt). There is no feature that distinguishes Basques, however Basques do appear to have higher diversity in features than any of their neighbors (mental note). You can see below the basic breakout:
Exploding out the Eurodonts is surprising and unsurprising. Atlanteans cluster together, and oddly enough with a poorly-defined Levant (and it appears possibly with some groups in India). North Africans share a strange affinity to some North Sea Euros. Finland and Early South Asians form outgroups.
"So, we have seen that the Swiss sites do not mix with the eastern domain, but fit well with the southern domain. The axis of external influences is clearly southern, whether this occurred during the Final Neolithic or the Bell Beaker in western Switzerland. "Specifically, this similarity of influences was more akin to the sphere of the Northwestern Iberian Chalcolithic. The amateur reading of this is that the whole point of this study punched a hole in the Begleitkeramik justification for a Westward movement of Beaker immigrants. In other words, people who used Begleitkeramik in this realm, apparently did not have ancestry in the Carpathian or Bohemian sphere, the necessary point of the common ware vs. funerary ware argument.
In more other words, the Western Swiss Beakers did have immigrant ancestry, just in the wrong direction. This is not to eliminate the probability that people ancestral to Beakers had ultimate ancestry in the East at some point. It just won't be a one paragraph story.
Anthropological Perspectives on Tooth Morphology: Genetics, Evolution, Variation
G. Richard Scott, Joel D. Irish Cambridge University Press, 2013 [here]
>>Chapter 13: Richard Scott , Alberto Anta, Roman Schomberg , and Concepcion de la Rúa
Basque dental morphology and the “Eurodont” dental pattern [here also in PDF form]