The Cerutti Mastodon site is a paleontological and possible archeological site located in San Diego County, California. In 2017, researchers announced that broken mastodon bones at the site had been dated to around 130,700 years ago. Since the bones were found with cobblestones displaying use-wear and impact marks among the otherwise fine-grain sands, intentional breakage of the bones by hominins using the stones has been suggested by the researchers.[1] If this is so, then some form of Homo may have been present in the Americas at an extremely early age
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