Angela
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The approximate dates of 2,000 years ago for the Iron Age finds and 1300 years ago for the Anglo-Saxon finds are from the authors of the paper in the preliminary abstract, from their speech at the ASHG Genetics Conference, and in interviews. Granted, they changed their entire conclusion between one event and the other, so I suppose anything is possible, but I would think they would know what periods they are studying.
Also, as per Hinxton.org:
"The real excitement was generated when the archaeologists came across the tell-tale signs of an Anglo-Saxon settlement, right in the middle of the proposed construction site. With the assistance of carbon dating, and knowledge of the structure of more intact Saxon sites elsewhere, the archaeologists were able to trace the changing fortunes of this homestead occupied over 1000 years ago. From what the archaeological team can make out, Anglo-Saxon residents in the sixth to seventh centuries AD had at least four huts, known in the trade as sunken-featured buildings or grubenh user ('grubbing houses'), on the site."
See also: http://oxfordarchaeology.com/earlymedieval/hinxton
The Iron Age samples may instead be from the Hinxton Rings site:
http://journals.cambridge.org/actio...e=online&aid=8892531&fileId=S0079497X00002012
The source for the 500 BC to 200 AD date seems to be the genome blogger "Felix" in his blog. I believe he is the one who uploaded the genomes to Gedmatch with the following dates: 2500-1800 years ago.
http://www.y-str.org/2014_10_01_archive.html
That of course would fit an approximate date of 1 AD. It would not fit the Anglo Saxon excavations at Hinxton dated to 700 AD.
Perhaps he should be asked where he got those dates and how certain he is of them. It may be they are from the Welcome Trust site, but they have many genomes, and these approximate dates may only apply to the Iron Age ones, and were mistakenly attributed by him to all of them. If they are not correct for the "Anglo-Saxon" samples, then the Gedmatch entry should be corrected.
Also, as per Hinxton.org:
"The real excitement was generated when the archaeologists came across the tell-tale signs of an Anglo-Saxon settlement, right in the middle of the proposed construction site. With the assistance of carbon dating, and knowledge of the structure of more intact Saxon sites elsewhere, the archaeologists were able to trace the changing fortunes of this homestead occupied over 1000 years ago. From what the archaeological team can make out, Anglo-Saxon residents in the sixth to seventh centuries AD had at least four huts, known in the trade as sunken-featured buildings or grubenh user ('grubbing houses'), on the site."
See also: http://oxfordarchaeology.com/earlymedieval/hinxton
The Iron Age samples may instead be from the Hinxton Rings site:
http://journals.cambridge.org/actio...e=online&aid=8892531&fileId=S0079497X00002012
The source for the 500 BC to 200 AD date seems to be the genome blogger "Felix" in his blog. I believe he is the one who uploaded the genomes to Gedmatch with the following dates: 2500-1800 years ago.
http://www.y-str.org/2014_10_01_archive.html
That of course would fit an approximate date of 1 AD. It would not fit the Anglo Saxon excavations at Hinxton dated to 700 AD.
Perhaps he should be asked where he got those dates and how certain he is of them. It may be they are from the Welcome Trust site, but they have many genomes, and these approximate dates may only apply to the Iron Age ones, and were mistakenly attributed by him to all of them. If they are not correct for the "Anglo-Saxon" samples, then the Gedmatch entry should be corrected.