Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater ...

At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs.

A tooth recently found in the famous Hell Creek formation in Montana suggests otherwise. According to findings published on ...

Mosasaurs were enormous reptiles best known for ruling ancient oceans more than 66 million years ago, but new evidence suggests some also lived in rivers. Scientists reached this conclusion after ...

Large prehistoric marine reptiles known as mosasaurs dominated the oceans until their extinction 66 million years ago.

Mosasaurs are best known as fearsome marine reptiles that ruled the oceans at the end of the dinosaur era. But new research ...

This video explores how Mosasaurus evolved into a marine predator so dominant that it effectively “broke the game” of ...

Mosasaurs are commonly considered marine reptiles, so finding their remains in a river environment prompted a clear question: ...

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...

A surprising fossil find shows that some mosasaurs lived in ancient rivers as oceans changed near the end of the Cretaceous.

The size of the tooth testifies to an impressive creature that could grow up to 11 metres long. Reconstruction by Christopher ...

Until now, these terrifying giant aquatic reptiles with a bulky skull and powerful jaws were thought to be sea-dwelling ...