The earliest European J2-M172 is found in Neolithic Sopot Culture in Hungary (sample ALE14, ca. 7000 ybp ). Further testing most likely will show this men positive for L283 and then give proof of presence for 7 millennia in Southeast Europe.
The known NextGenSequences (NGS, see J2-M172 Research Tree simplified) for L283 are currently 52. Of them those are not European:
RISE408 ancient Armenia ~1109 BC
Hammer et al 2009 list 44 of 952 Jewish Y-chromosomes as positive for J2b-M12 (4.6%) of which 16 are assigned to Cohanim lineages out of a total of 215 (7.4%).
Wim Penninx in his analysis of the known Y-DNA ancestors of Ashkenazi Jews
estimates the TMRCA of the Jewish DYS455=8 group to 369-906 CE and currently lists no most likely origin.
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