Two new species of prehistoric sharks, dating back to around 325 million years uncovered in limestone formations of a Kentucky cave.

Illustrations of prehistoric North and South American animals including a glyptodon, lestodon, horse, mastodon, saber-toothed cat and a toxodon AP ...

For a long time, scientists believed the first humans to arrive in the Americas soon killed off these giant ground sloths through hunting, along with many other massive animals like mastodons, […] ...

Isolation allows creatures to thrive as their relatives perish due to the threats present on much larger landmasses ...

Any self-respecting prehistoric theme park would most certainly ... Cladoselache lived in waters over what is now North America and, unlike most sharks, these animals fossilized well with some ...

The diet of a key prehistoric American group appears to have been rich in mammoth meat, a study analyzing data extracted from the 12,800-year-old remains of a toddler has revealed.

A team of scientists found prehistoric animal footprints that indicate how creatures behaved in Oregon as far back as 50 million years ago.

Fossilized footprints and tracks dating back 50 million years ago discovered at the John Day Fossil Beds National Monument could provide new insight into how prehistoric animals lived in Oregon.

Traskasaura sandrae is a "very odd" mix of primitive and derived traits. A prehistoric sea monster never-before-known to man was hunting prey in North America 85 million years ago, fossils found ...