Mastodon Mastodon Mastodons (Greek: μαστός "breast" and ὀδούς, "tooth") are any species of extinct proboscideans in the genus Mammut (family Mammutidae), distantly related to elephants, that inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of the Pleistocene 10,000 to 11,000 years ago. Mastodons lived in herds and were predominantly forest dwelling animals that fed on a mixed diet obtained by browsing and grazing with a seasonal preference for browsing, similar to living elephants. "M. americanum", the American mastodon, is the youngest and best-known species of the genus. They disappeared from
Cerutti Mastodon site 300 other bone fragments. The remains of dire wolf, horse, camel, mammoth and ground sloth were also discovered at the site. Five cobbles displaying use-wear and impact marks were also recovered from the site in Bed E. The research team found cobbles and broken mastodon bones lying together at the site. Uranium-thorium dating of bones from the site estimates a dating of around 130,700 (±9,400) years ago for the Cerutti Mastodon site. The research team claims that the cobbles found at the site were used as hammerstones and anvils. The research team also claims that the mastodon bones show signs