Well, regardless of where the sample was taken, then, the Carthaginians are irrelevant if it's dated to the Neolithic in Sardinia itself, yes?
The date of the earliest Neolithic in Sardinia, Cardial, is just around this time, so I suppose there could have been an overlap with any Mesolithic people who remained, but I think it's probably more likely this y line came with the Neolithic settlers, as I said initially.
If the E-M81 was from samples taken from Cagliari, then, yes, that line could be from Carthaginians, or maybe it was Saracen raiders from later in history. There are lots of possibilities. This is the problem with trying to use modern dna to assign "ethnicity" or a certain migration to the presence of certain y lines. Sometimes it's proven true, and sometimes it isn't.
Goodness, King John, you seem to have become infected with Azzurro's fascination with the Carthaginians. Well, I suppose if an Italian can so identify with the arch-enemy of Rome, it's possible. You'd have to identify with Titus to match that!
I certainly wouldn't take these minor y lines as necessarily having a direct correspondence with autosomal results. In the Dienekes K12 run, the Sardinians came out as 2.6% Northwest African. Yet, all he had were the samples generally from the Barbagia, so it's unlikely that had anything to do with any Carthaginians. At the same time, Otzi came out part NorthWest African too.
It just points out the limitations of Admixture runs based on modern clusters.
https://docs.google.com/spreadsheet...0SRE5L6ED2osPs9M/edit?hl=en_US&hl=en_US#gid=0
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Btw, I wasn't able to find info on where "particular samples" were taken. Could you point me to where you got that info?