Broken bones and rocks yield evidence that pushes back the record of early humans in North America by more than 100,000 years

Source: Natural History Museum

Photo:  Richard Cerutti, retired PaleoServices Field Paleontologist (left) and Dr. Tom Demere, Curator of Paleontology, San Diego Natural History Museum (right), with mastodon tusk

April 27, 2017 (San Diego) -- Discovery of a 130,000-year-old mastodon skeleton in San Diego with bones altered by early humans dramatically revises the timeline for when humans first reached North America, according to a paper to be published in the April 27 issue of the prestigious science journal Nature.  The Cerutti Mastodon site is the oldest well-documented site with evidence of human presence in the Americas—and analysis reveals some startling findings.