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An amazing find at an Ice Age site in San Diego, California may dramatically alter the accepted timeline for when early humans first reached North America. 130,000-year-old bones and teeth of a mastodon show evidence of modification by early humans.
A trove of ancient bones was found in 1992 by construction workers. It included the remains of dire wolves, horses, gophers, camels, and -the most exciting - an adult male mastodon. Ars Technica reports that It took years of testing before an interdisciplinary team of researchers could ascertain that the mastodon bones date to 130,000 years ago. But with this information in hand an even more shocking claim was waiting to be made – there are marks the researchers assert were left on the bones by early humans.
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