From the Paleoamerican Odyssey Conference some years ago. If you have a one hour attention span and really want to learn about Paleo archaeology, google up the "Rethinking the First Americans" video and pull up a chair for a treat.
Unfortunately, I don’t know where I screen grabbed this from. But, have we not known, for some time, I think from DNA study of the Lake Baikal child, that North Eurasian genetics entered what would be Native Americans >20,000 years ago?FWIW:
1) Trying to impose the post-European admixture supposition on the Cherokee people who have been studied in detail crashed and burned. Years ago. The European component in some Cherokees cannot be ascribed to post-contact mixing. But the credentialed, peer-reviewed Influencers consign such findings to the memory hole, leaving people with the impression you've articulated.
The remains of such people as the Athcabasans are a huge reservoir of data potentially disproving this. Testing their buried remains 14-C dating from before contact would be a one shot, slam dunk proof that this genetic component antedates known (officially acknowledged) European arrival(s). Which is probably one major reason why this is not done routinely, without having to secure permission from people disinclined to grant it, and becoming a pariah unless you wrote around what would likely be found.
The real game-changer is the male line DNA stuff beginning to come to light now, with all people (not just NAs)*. For Example, going ONLY by female DNA, the Spanish Conquest never happened. Yet this is the line of (pseudo-)reasoning used to "prove" 100% Beringian descent of Native Americans.
2) All such information is, of course, time stamped.
* One outstanding example being Elizabeth C. Hirschman: DNA Evidence Suggexts Many Lowland Scots And Northern Irish have Jewish Ancestry. ISOR Journal of Humanities and Social Science Vol. 26 Issue 6 Series 10 (June 2021), pp. 22-42.
Question...are ALL Clovis points over-shot?
No, nobody can any longer assume nobody was here more than 14,000 years ago. The White Sands fossil human footprints discovery demonstrates that humans were in New Mexico 21,000-23,000 years ago. These footprints demonstrate humans were in the Americas during the Last Glacial Maximum(LGM), and therefore could not have arrived via ice free corridor. This discovery reinforces the hypothesis that arrival was by boat. And, if they were in NM 23,000 years ago, and they were, then how much earlier must they have arrived?"IF the Solutrean's were here, current research suggests they did not leave any DNA behind".
I would have to question what "current research" means? I suspect that it means that maybe up to a couple dozen samples of DNA from bones found in the Americas belonging to folks who lived there from roughly 5000 to 12,000 years ago have been tested, and that no significant DNA has been found, that is currently suggested to be similar to what we suspect "Solutrean" DNA would have been like more than 15,000 years ago.?
It seems to me that "current researchers" are testing DNA samples from folks that lived thousands of years after the historically "accepted" mass migration through Beringia 14 to 15 thousand years ago. We are told that these folks arrived from the west and within just a few hundred years they had spread virtually all over what is now North America, leaving behind highly refined fluted points used upon atlatl's. Why are we not to assume that under this scenario, the Beringia immigrants possessing superior tools for hunting and war would not have nearly wiped out any earlier immigrants with the weapons and diseases they brought with them, as seen in later mass migrations from the east?
These researchers have concluded that no one was in North America prior to the mass migration 14,000 years ago, simply because they tested a small number of DNA samples of people living there thousands of years after the migration, and only finding DNA from people involved in this mass migration. To me this is the mental and statistical equivalent of randomly testing a few dozen DNA samples of people living here roughly 2000+ years from now, and determining that no one was in North America prior to 1492, because all we found in our sample was DNA from folks involved in the migration from the east over the last 500 years.