But the technique was not very reliable at the time, so the Cerutti mastodon remained an enigma. A boulder discovered at the Cerutti Mastodon site thought to have been used by early humans as a hammerstone. [Surprising infant grave may solve the mystery of North American migration]To some who study American prehistory, this interpretation of the Cerutti site beggars belief. He doesn't think the cobbles found at the Cerutti mastodon site meet that standard. Or perhaps the mastodon site is a fluke — or a mistake — and they will find nothing at all.

Source: Washington Post April 26, 2017 17:03 UTC