Scientists have found fragments a human-made projectile point in a rib of an American mastodon (Mammut americanum) from the Manis site, Washington, the United States. The projectile point is about 13,900 years old and is morphologically different from later cylindrical points of the 13,000-year-old Clovis culture. The artifact, which is made of mastodon bone, shows that people predating Clovis made and used osseous weapons to hunt megafauna in the...
