An archaeological dig site near
Buttermilk Creek in Texas is challenging scientist's understanding of America's first residents. The site contains small stone tools which are believed to have come from about 15,000 years ago, which is more than 2,000 years earlier than previously thought.
Fox News reports that the cache was found some five feet below the level where the earliest human deposits have been found and contained "15,528 artifacts, including chipping debris from working stones and 56 tools such as blades, scrapers and choppers."
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