They can tell us how these fish live and evolved. All sharks have teeth, but what may surprise you is that they don’t all have sharp, triangular teeth. ‘Sharks have been around for 420 million years,’ ...

A team of paleontologists led by the University of Colorado Boulder uncovered a part of the jawbone and three molar teeth.

This "living fossil" can grow as large as an alligator ... and two rows of piercing teeth, these huge fish could easily be mistaken for a ferocious gator — hence their common name: alligator ...

Nathan Dehaut Whoever said everything is bigger in Texas probably wasn’t thinking about teeth, but a recent fossil find in the Lone Star State shows how large some chompers could get.

and fish fossils tend to remain well-preserved. Additionally, fish-eating birds had numerous teeth along their beaks, whereas ...

Colorado, a mammal lived in a swampy area similar to modern-day Louisiana — a mammal significantly larger than its furry ...

In 2016, John Foster was walking around the sandstone countryside that defines northwest Colorado when he stopped at ...

The new mammal lived in Colorado 70 to 75 million years ago -- a time when a vast inland sea covered large portions of the ...

Sharks, ancient cartilaginous fishes, have existed for over 410 million years, surviving five mass extinctions through their ...

A team of paleontologists working in northwest Colorado have discovered Heleocola piceanus, a mammal that was alive during ...

Paleontologists have discovered a new mammal that lived with the dinosaurs in Colorado millions of years ago after unearthing ...

Older fossils lay even deeper beneath the bone bed. These 8.9-million-year-old rocks included fossilized bones of fish and marine mammals. Experts also found teeth from juvenile megalodons and ...