Researchers are calling for CT scans to confirm the authenticity of a Cretaceous period fossil that led to the identification ...

Mastodon bones are rare discoveries, but Orange County, N.Y., has proved to be a national hotbed for these extraordinary ...

The mandible belongs to an adult mastodon, an iconic species of North America that went extinct about 13,000 years ago. This jawbone is the first found in New York State in more than a decade. But why ...

Prehistoric sloths were massive creatures with large claws, suggesting early humans in the Americas might have coexisted with them for millennia. New findings from Brazil's Santa Elina site imply ...

Illustrations of prehistoric North and South American animals including a glyptodon, lestodon, horse, mastodon, saber-toothed cat and a toxodon AP “Anything older than about 15,000 years still ...

Their prehistoric ancestors were huge — up to ... along with many other massive animals like mastodons, saber-toothed cats and dire wolves that once roamed North and South America.But new ...