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Showing posts with label BOO. Show all posts
Showing posts with label BOO. Show all posts

Monday, December 9, 2019

The BOO people: earliest Uralic speakers in the ancient DNA record?


N-L1026 is the Y-chromosome haplogroup most closely associated with the speakers of Uralic languages. Thus far, the oldest published instances of N-L1026 are in two Siberian-like samples dating to 1473±87 calBCE from the site of Bolshoy Oleni Ostrov (BOO), located within the Arctic Circle in the Kola Peninsula, northern Russia.

So does this mean that the BOO people were Uralic speakers? I'm now thinking that it probably does, even though, as the scientists who published the BOO samples a year ago pointed out, they predate most estimates of the spread of extant Uralic languages into the Kola Peninsula (see Lamnidis et al. here).

Hundreds of ancient human samples from across Eurasia have been sequenced since last year. In fact, thousands if we count unpublished data. But only a handful of them belong to N-L1026.

Indeed, as far as I know, the next oldest instance of N-L1026 from Europe after those at BOO is still in an Iron Age sample from what is now Estonia published earlier this year as 0LS10. Of course, this individual was in all likelihood an early west Uralic (Finnic) speaker (see Saag et al. here).

Moreover, consider these comments by Murashkin et al. in regards to the BOO site (referred to as KOG in their paper, available here):

Most of the bodies had been buried in wooden, boat-shaped, lidded caskets, which looked like small boats or traditional Sámi sledges (Ru. kerezhka).

...

The morphological characteristics of the skull series of the KOG are not like those of any other ancient or modern series from the Kola Peninsula, including the Sámi people. Instead, the series shows closer biological affinities with ancient Altai Neolithic and modern, Ugric-speaking Siberian groups (Moiseyev & Khartanovich 2012). It has earlier been suggested that modern Ugric-speaking Siberians, together with Samoyeds and Volga Finnic populations, share some common morphological characteristics that indicate their common origin (Alekseyev 1974; Bunak 1956; Gokhman 1992).

...

Based on the materials from the grave field, we can argue that there were direct or indirect contacts between the inhabitants of the Kola Peninsula and southern and western Scandinavia (Murashkin & Tarasov 2013).

Thus, the BOO people may have spoken an early west Uralic language related to Sami languages. It's also possible that they are in part ancestral to the N-L1026-rich Sami people.

Another intriguing thing about these mysterious ancients is that individual BOO003 belongs to the rare mitochondrial haplogroup T2d1b1. Now, this clearly is not a lineage native to Europe or indeed any part of North Eurasia. Its ultimate source is probably West or Central Asia. So how did this pioneer polar explorer end up with such an unusual and exotic mtDNA marker, and might the answer be an important clue about the origins of the BOO people?

The most plausible explanation is that the ancestors of BOO003 were associated with the Seima-Turbino phenomenon, which stretched from the taiga zone to the oases of what is now western China along the Ob-Irtysh river system, and probably facilitated cultural, linguistic and genetic exchanges between the populations of North Eurasia and Central Asia.

In other words, considering all of the clues, it would seem that the BOO people came from some part of the Ob-Irtysh basin, which might thus be the best place to look for the population with the oldest and phylogenetically most basal N-L1026 lineages. And if we find that, then we've probably found the proto-Uralians and their homeland.


Below is a Principal Component Analysis (PCA) based on Global25 data featuring the earliest likely Uralic speakers in the ancient DNA record. It was produced with an online PCA runner freely available here. EST_IA includes the above mentioned 0LS10, while FIN_Levanluhta_IA is largely made up of Saami-related samples from western Finland. See anything interesting? Feel free to let me know about it in the comments below.


See also...

Big deal of 2019: ancient DNA confirms the link between Y-haplogroup N and Uralic expansions

It was always going to be this way

More on the association between Uralic expansions and Y-haplogroup N