If Upper Paleolithic people were "European" from about 35,000 B.P., then such population distinctions are at least that old. And the Cro-Magnons were already racially European, i.e., Caucasoid. This has always been accepted because of the general appearance of the skulls: straight faces, narrow noses, and so forth. It is also possible to test this arithmetically ... Except for Predmosti 4, which is distant from every present and past population population, all of these skulls show themselves to be closer to "Europeans" than to other peoples - Mladec and Abri Pataud comfortably so, the other two much more remotely.See also Affinities of Early Upper Paleolithic Europeans.
September 22, 2005
Affinities of Early Upper Paleolithic Europeans (II)
W.W. Howells, 1997, Getting Here: the story of Human Evolution, p. 188.