Researchers have revealed a previously unknown species of "giant sea lizard" with a fearsome set of "dagger-like" teeth that lived during the age of the dinosaurs. The new species, described in a ...

Scientists have unearthed the remains of a gigantic, 200 million-year-old sea monster that may be the largest marine reptile ever discovered. The newfound creature is a member of a group called ...

A gigantic sea monster from the era of the dinosaurs has been discovered and named after a Norse snake. The 24-foot-long creature is a new species of mosasaur—aquatic, carnivorous lizards that lived ...

Paleontologists have discovered a strange new species of marine lizard with dagger-like teeth that lived near the end of the age of dinosaurs. Their findings, published in Cretaceous Research, show a ...