Remarkable New Evidence for Human Activity in North America 130,000 Years Ago
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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 …