Over the past week or so, since the publication of new Corded Ware samples in Narasimhan, Patterson et al. (2019) and after finding out that the R1a-M417 star-like phylogeny may have started ca. 3000 BC, I have been ruminating the relevance of contradictory data about the Ukraine_Eneolithic_o sample from Alexandria, its potential wrong radiocarbon date, and its implications for the Indo-European question.
How many other similar ‘controversial’ samples are there which we haven’t even considered? And what mechanisms are in place to control that the case of Hajji_Firuz_CA I2327 is not repeated?
Ukraine Eneolithic outlier I6561
It was not … Read the rest “On the Ukraine Eneolithic outlier I6561 from Alexandria”
(Continued from the post Corded Ware culture origins: The Final Frontier).
Looking at the PCA of Wang et al. (2018), I realized that Sredni Stog / Corded Ware peoples seem to lie somewhere between:
- the eastern steppe (i.e. Khvalynsk-Yamna); and
- Lower Danube and Balkan cultures affected by Anatolian- and steppe-related (i.e. Khvalynsk-Novodanilovka) migrations.
This multiethnic interaction of the western steppe fits therefore the complex archaeological description of events in the North Pontic, Lower Danube, and Dnieper-Dniester regions. Here are some interesting samples related to those long-lasting contacts:
1. I3719 (mtDNA H1, Y-DNA I2a2a) Ukraine Neolithic sample … Read the rest “Trypillia and Greece Neolithic outliers: the smoking gun of Proto-Anatolian migrations?”
This is the first of a series of posts analyzing the findings of the recent Nature papers Olalde et al.(2018) and Mathieson et al.(2018) (abbreviated O&M 2018).
As expected, the first Y-DNA haplogroup of a sample from the North Pontic region (apart from an indigenous European I2 subclade) during its domination by the Yamna culture is of haplogroup R1b-L23, and it is dated ca. 2890-2696 BC. More specifically, it is of Z2103 subclade, the main lineage found to date in Yamna samples. The site in question is Dereivka, “in the southern part of the middle … Read the rest “Consequences of O&M 2018 (I): The latest West Yamna “outlier””
I have written before about how the Late Neolithic sample from Zvejnieki seemed to be an outlier among Corded Ware samples (read also the Admixture analysis section on the IEDDM), due to its position in PCA, even more than its admixture components or statistical comparison might show.
In the recent update to Northern European samples in Mittnik et al. (2018), an evaluation of events similar to the previous preprint (2017) is given:
Computing D-statistics for each individual of the form D(Baltic LN, Yamnaya; X, Mbuti), we find that the two individuals from the early phase of the
… Read the rest “The concept of “Outlier” in Human Ancestry (III): Late Neolithic samples from the Baltic region and origins of the Corded Ware culture”
I already wrote about the concept of outlier in Human Ancestry, so I am not going to repeat myself. This is just an update of “outliers” in recent studies, and their potential origins (here I will repeat some of the examples):
Early Khvalynsk: the three samples from the Samara region have quite different positions in PCA, from nearest to EHG (of Y-DNA haplogroup R1a) to nearest to ANE ancestry (of Y-DNA haplogroup Q). This could represent the initial consequences of the second wave of ANE ancestry – as found later in Yamna samples from a neighbouring region -, … Read the rest “The concept of “Outlier” in Human Ancestry (II): Early Khvalynsk, Sredni Stog, West Yamna, Iron Age Bulgaria, Potapovka, Andronovo…”
While writing the third version of the Indo-European demic diffusion model, I noticed that one Corded Ware sample (labelled I0104) clusters quite closely with steppe samples (i.e. Yamna, Afanasevo, and Potapovka). The other Corded Ware samples cluster, as expected, closely with east-central European samples, which include related cultures such as the Swedish Battle Axe, and later Sintashta, or Potapovka (cultures that are from the steppe proper, but are derived from Corded Ware).
I also noticed after publishing the draft that I had used the wording “Corded Ware outlier” at least once. I certainly had that term … Read the rest “The concept of “outlier” in studies of Human Ancestry, and the Corded Ware outlier from Esperstedt”
When I started ruminating in 2016 over the apparent differences between populations that kept the two-velar distinction of Indo-Tocharian, and the only two unrelated dialectal groups that showed a strong satemization trend, I believed that – much like in modern times – there would be no clear-cut division in terms of ancestry or Y-DNA haplogroups between neighbouring forest-steppe and steppe populations.
The answer to the question of interacting ethnolinguistic groups had to lie, as everything else, on the investigation of fine-scale population movements that must have put Uralic-speaking peoples as the main substratum of Balto-Slavic and Indo-Iranian.
Still, … Read the rest “RISE1.SG, R1b from Poland CWC, a likely mislabelled Balto-Slav”
Open access Genetic ancestry changes in Stone to Bronze Age transition in the East European plain, by Saag et al. bioRxiv (2020).
Interesting excerpts (emphasis mine):
Y-DNA chromosome haplogroup
(…) the Bronze Age Fatyanovo Culture individuals  maternal (subclades of mtDNA hg U5, U4, U2e, H, T, W, J, K, I and N1a) and paternal (chrY hg R1a-M417) lineages were ones characteristic of CWC individuals elsewhere in Europe. Interestingly, in all individuals for which the chrY hg could be determined with more depth (n=6), it was R1a2-Z93, a lineage now spread in Central and South Asia, rather than the
… Read the rest “R1a-Z93-rich Classical CWC-like Fatyanovo replaced Volosovo”