However, some recent evidence suggests that an unknown human species may have lived in California about 130,000 years ago. In 1992, while repairing a freeway in Southern California, workers found a large collection of ancient bones, including those of mastodons, prehistoric relatives of mammoths.
This site, which was named Cerutti Mastodon, was investigated by archaeologists and excavated. In 2017, they analyzed the bones of a mastodon that showed signs of being “processed” with tools.
Next to these bones, they found stone artifacts that had been shaped by human hands, such as hammerstones and anvils....<<<Read More>>>...