Remarkable New Evidence for Human Activity in North America 130,000 Years Ago
Researchers say prehistoric mastodon bones bear human-made markings The surface of mastodon bone showing half impact notch on a segment of femur. (Tom Deméré, San Diego Natural History Museum) – By Brigit Katz SmithsonianMag.Com 2017 Apr 26 – In 1992, construction workers were …