Admixture similar to that of an individual of the Sredny Stog culture was found in Hittite-era Anatolians by Davidski, using qpAdm. In corroboration with other data supporting the Steppe Hypothesis for Indo-European origins, this would support a hypothesis that Indo-European language began developing on the Pontic-Caspian steppe prior to the Yamnaya culture (3300 – 2600 BC) as the pre-Anatolians would have developed out of the Sredny Stog culture in Ukraine c. 4500-3500 BC. David W. Anthony previously suggested this hypothesis for the origin of the (now extinct) Anatolian language family, that it is a result of early Indo-Europeans migrating out of the Sredny Stog culture (southward along the west coast of the Black Sea, by his estimation) and eventually into Anatolia. He makes this argument based on archaeological, linguistic, and mythological evidence, in The Horse the Wheel and Language. But now it appears that we have some genetic evidence which agrees with this hypothesis as well.