Geologists near Starkville found a bone of a Mosasaurus hoffmannii, one of the biggest species of mosasaurs, which could reach lengths of 50 feet.

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and the ability to birth live young ...

Paleontologists are digging into the new dinosaur species found in Normandy, France. This 100 million-year-old predator, Caletodraco cottardi, lived during the Early Cretaceous period during Europe’s ...

We’ve seen evidence of many “sea monsters” that lurked in the oceans millions of years ago, but a new discovery of a colossal carnivore from over 200 million years in the past really takes ...

The “long-vanished” sea once covered part of what is now mainland ... accompanying other large, prehistoric marine reptiles ...

But 66 million years ago, tantalizingly close in time to when the dinosaurs went extinct, a multitude of sea creatures died here — a “mass death assemblage” — and sank to the bottom of ...

According to some scientists, fossil evidence clearly shows a decline in the number of dinosaur species for several million years leading up to the end of the Cretaceous. Sea Level The presence of ...

A resurfaced video of a 6-foot-long pliosaur skull — dubbed the "Underwater T-Rex" — is going viral, sparking online calls for its de-extinction. The ancient sea predator, discovered in 2023, once ...

The answer will help scientists formulate a theory about how Borealopelta died and came to rest, buried beneath a vast sea. In Dinosaur Cold Case, scientists are just beginning to solve these ...