Wow were did you read that. I would be fascinated to read that myself. Personally I subscribe to the theory that North and South America were settled much longer ago than the last Ice Age. I think the evidence is starting to pile up pretty high to support that.
I forget which Gear book it was contained in and the resources they listed, that I explored, it was a few years back now.
But the gist is, they now know there was a large shallow central sea that lead to the formation of the upper Great lakes at the end of the last ice age, when doing digs in this area, archeologists found large amounts of ancient human bones, perhaps predating the paleo Indians, scattered in amongst the glacial till, that appears to have been all thrown together in a massive out pouring of water. The theory being that when the glaciers collapsed en masse, there was a huge explusion of water, till and the peoples did not have time to flee the on slot brought about by the collapse. This findings of bones mixed with glacial till, means that the First Peoples were present for sure at the time of the central sea and the collapse of the glaciers, and indeed either lived in the shadow of them, or under them.
Under them is extremely plausible, as they were miles thick in places and would be honey combed with caverns and tunnels just as glaciers are today. Having fire in them would not be any different than in an Igloo, and less so because they could have bigger fires. And they would escape the climatic external conditions around the glaciers, that would suffer under if they lived in the shadow.
Currently accepted in NA history, excluding Mexico, and cCentral America are; First Peoples dates going back 13,000 years with the Paleo Indian, then Early Archaic, at about 7300 -6000 BCE, Archaic, around 6000-3000 BCE, Basketmakers around 3000-1500 BCE, Woodland about 1500-100 CE, Mississipian, and Pueblo around 800-1000 CE.
However, with the findings in the Great Lakes area, and the chert blade recently found in the Jamestown area, from the time when NA and Europe were covered in Ice, suggest that their were pockets of Peoples living here throughout the ice age.
Then of course there is what Eliza has recounted by way of oral traditions, being found to be true.
There is no historical findings of evidence of the Southwest Anasazi, or the Mississipians having any "Moorish/African/" influence within their societies. Nor is there any in the Archaic Floridian and lower Mississipian peoples, nor any in the Paleo Indian and Early Archaic eras either.
And there is no consensus on the Olmec's receiving visitors from west Africa. And if there is found to be any for sure, it was only about 2250 years ago, long long after First Peoples advent on Turtle Island. In fact, there is more evidence that they perhaps had visitors from space, rather than from West Africa.
Also, just had some friends drop by who are Nooaitch and showed them this thread. Response was that they were pretty upset about such claims. And I won't say what else they stated.