Charlie, please try to report articles correctly. Western Eurasians means people from "West Asia and Europe". Note that this is before the recolonisation of Western Europe from the Middle East after the Last Glacial maximum, so what we are seeing is quite likely a movement of people from the Middle East both eastwards and westwards.

I see the four "takehome" messages are:
First Americans descended from the meeting and admixture of at least two populations, of which one is related to contemporary East Asians and the other to present-day western Eurasians.

These findings may explain the presence of mitochondrial lineage X in Native Americans.

The presence of a population related to western Eurasians further into northeast Eurasia provides a more likely explanation for the presence of non-East Asian cranial characteristics in the First Americans, rather than the Solutrean hypothesis that proposes an Atlantic route from Iberia.

Genetic continuity in south-central Siberia before and after the LGM provides evidence for the presence of humans in the region throughout this cold phase, which is of consequence to population movements into Beringia and ultimately the Americas around 15,000 years ago.

Lots of comments at Dienekes blog [dienekes.blogspot.co.uk]

Doug Weller

Director The Hall of Ma'at
Doug's Skeptical Archaeology site::
[www.ramtops.co.uk]