For nearly 30 million years, a 2,000-pound beast known as the entelodont ruled a sweeping empire from Mongolia to what is now ...

Here are just a few groups of ancient animals that live on: And, here are the animals that get my vote for “most prehistoric-looking ... of hoofed mammals still in existence today.

Scientists identified the tiny species of cat from a fossilized jawbone, which could date back as far as 300,000 years ago.

CELINA - Though dinosaurs are the most notable of the prehistoric animals, smaller mammals and fish walked and swam in Ohio, ...