Story highlights Discovery at a dig site in San Diego shows there was human activity in North America 130,000 years agoUp until now, scientists agreed the oldest record of human sites in North America was about 15,000 years ago(CNN) The remains of a mastodon discovered during a routine excavation in California shows possible human activity in North America 130,000 years ago -- or about 115,000 years earlier than previously thought. Paleontologists with the San Diego Natural History Museum discovered the remains of the elephant-like animal more than 20 years ago. "This is a whole new ball game," Steve Holen, co-director of the Center for American Paleolithic Research and the paper's lead author, told CNN. The discovery changes the understanding of when humans reached North America. These are some of the Mastodon bones found at the excavation site.

Source: CNN April 26, 2017 17:13 UTC