Carl Zimmer (brother of lexicographer Ben Zimmer, as J.W. Brewer points out in a comment on the Log post about this) has a story in the NY Times (archived) that starts with a potted history of Indo-European and then continues:
Linguists and archaeologists have long argued about which group of ancient people spoke the original Indo-European language. A new study in the journal Nature throws a new theory into the fray. Analyzing a wealth of DNA collected from fossilized human bones, the researchers found that the first Indo-European speakers were a loose confederation of hunter-gatherers who lived in southern Russia about 6,000 years ago.
The linked study is “The genetic origin of the Indo-Europeans” by Iosif Lazaridis et al., and the abstract reads:
The Yamnaya archaeological complex appeared around 3300 ʙᴄ across the steppes north of the Black and Caspian Seas, and by 3000 ʙᴄ it reached its maximal extent, ranging from Hungary in the west to Kazakhstan in the east. To localize Yamnaya origins among the preceding Eneolithic people, we assembled ancient DNA from 435 individuals, demonstrating three genetic clines. A Caucasus–lower Volga (CLV) cline suffused with Caucasus hunter-gatherer ancestry extended between a Caucasus Neolithic southern end and a northern end at Berezhnovka along the lower Volga river. Bidirectional gene flow created intermediate populations, such as the north Caucasus Maikop people, and those at Remontnoye on the steppe. The Volga cline was formed as CLV people mixed with upriver populations of Eastern hunter-gatherer ancestry, creating hypervariable groups, including one at Khvalynsk. The Dnipro cline was formed when CLV people moved west, mixing with people with Ukraine Neolithic hunter-gatherer ancestry along the Dnipro and Don rivers to establish Serednii Stih groups, from whom Yamnaya ancestors formed around 4000 ʙᴄ and grew rapidly after 3750–3350 ʙᴄ. The CLV people contributed around four-fifths of the ancestry of the Yamnaya and, entering Anatolia, probably from the east, at least one-tenth of the ancestry of Bronze Age central Anatolians, who spoke Hittite. We therefore propose that the final unity of the speakers of ‘proto-Indo-Anatolian’, the language ancestral to both Anatolian and Indo-European people, occurred in CLV people some time between 4400 ʙᴄ and 4000 ʙᴄ.
There are more details at both the Times article and the Log post linked at the start of this one; I suppose I could have added this to one of the earlier Yamnaya-related LH posts, but those threads are getting long and people have been sending this to me, so I thought I’d give it its own post. Thanks, Eric and Jack!
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