feb 1, 130700 BC - Cerutti Mastodon site

Description:

In 2017, researchers announced that broken mastodon bones at the site had been dated to around 130,700 years ago.

The bones were found with cobblestones displaying use-wear and impact marks among the otherwise fine-grain sands. Researchers have proposed that these marks were caused by the intentional breakage of the broken bones by hominins using the cobblestones.