Good post. Very interesting. There was a report on CNN today about some stone tools and animal remains found in the Midwest that were in a level dated to 50,000 BP. Some hominid remains that old would really knock all the theories for a loop.
The paleoanthropology knowledge base exploded with the finds in the Afar region of East Africa in the 1970s-1980s. Sounds like somewhat the same thing may be happening in the Americas--both new discoveries and new evaluations of old discoveries.
I believe you're talking about the Topper site in South Carolina that has been the news for the last couple days.
Check out the below link, 169 complete skeletons and 90 intact brains that contain the oldest DNA in the world. (According to the article)
Bye, Bye Beringia (8,000 Year-Old- Site In Florida)
These ancient mummies in Florida have 'European' DNA...according to a documentary I saw about this on TV.