A pre-Clovis spear point found in Texas from about 15,000 years ago largely reaffirms the existing paradigm for how the founding population of the Americas settled these regions after the Last Glacial Maximum.
In particular, it clarifies that there were populations in the interior of North America before there was an ice free land corridor from Beringia to North America in the north. Somebody either walked across a glacier for many miles, or took a boat down the Pacific coast and them migrated inland before the ice free land corridor opened.
In other New World pre-history news, a new paper (whose results were previously blogged here) notes that a one study outlier genetic finding in the Amazon has no trace in ancient DNA:
Intriguingly, a signal of Australasian ancestry that has been observed in some Amazonian groups is not evident in any of the ancient Siberian or Beringian samples sequenced here, or in previous studies.
My own theory is that the genetic trace seen is the product of one or two individuals or a nuclear family who were newcomers to the Beringian community that were in the first wave of advance to settle South America.