Humans reached N America 130,000 years ago: Study

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MNA Science & Technology Desk: Early humans probably reached North America 130,000 years ago — 115,000 years earlier than previously thought, said a study.

The findings, published in the journal Nature, are based on analysis of bones and teeth of a mastodon discovered in an an Ice Age site in San Diego, California.

“The evidence we found at this site indicates that some hominin species was living in North America 115,000 years earlier than previously thought,” said Judy Gradwohl, President and CEO of the San Diego Natural History Museum.

The fossil remains were discovered by museum paleontologists during routine paleontological mitigation work at a freeway expansion project site managed by the California Department of Transportation (Caltrans).

The bones, tusks, and molars, many of which are sharply broken, were found deeply buried alongside large stones that appeared to have been used as hammers and anvils, making this the oldest in situ, well documented archaeological site in the Americas.

Until recently, the oldest records of human sites in North America generally accepted by archaeologists were about 14,000 years old.