"If DNA studies show these two breeds to be very close genetically, it would support the contention of mainstream historians and archaeologists that the American Indians are predominantly of Northeast Asian origin."
Why would they have been wiped out across the entire continent, other than in the isolated pine barrens, swamps and barrier islands of NC, SC, GA and northern FL, though? This region has not been free, historically speaking, of large predators, such as wolves and panthers (referred to by the Scots-Irish as "painters").