13,800 year old spear that killed a mastodon proves humans were in America one millennium earlier than first thought | Mail Online: "An ancient spear lodged in a mastodon has proved humans populated North America 1,000 years earlier than previously thought, it was claimed today.
Scientists have now accurately carbon-dated the sharp tip, itself carved from mastodon bone, 30 years after it was found in the U.S. state of Washington.
It was embedded in a rib from one of the creatures, a giant relative of the elephant and woolly mammoth, and after a long wait experts have said that the bone and spear point are both around 13,800 years old. "
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