E1a-M33, aDNA from Russia

[Farroukh]

Boulygina et al. Mitochondrial and Y-chromosome diversity of the prehistoric Koban culture of the North Caucasus (2020) (https://www.sciencedirect.com/science/article/pii/S2352409X20301486?dgcid=coauthor)

Sample number Burial site Mitochondrial haplogroup (Sanger sequencing) Mitochondrial haplogroup (Illumina sequencing) Y-chromosomal haplogroup (Illumina sequencing)
2 Klin-Yar-3 (https://en.wikipedia.org/wiki/Klin-Yar) J1c J1b1 E1a2a1b1b (E-CTS4038 (https://yfull.com/tree/E-CTS4038/))

E1a-CTS4038 aDNA sample from Koban culture, Stavropol (Russia) (https://en.wikipedia.org/wiki/Koban_culture)

UPD: Wrong attribution. See comments of Pribislav (https://anthrogenica.com/showthread.php?p=660275#post660275)

[Scythoslav]

"A study published in the “Journal for archeological science” by Boulygina et al. 2020 analyzed ancient Koban burials and found a high number of paternal lineage D1a2a1 which is commonly found among the Ainu people in northern Japan and southeastern Russia. "

WTF! E and its cousin both found among Kobans. Where did the D come from?