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

Dinosaurs ruled the Mesozoic, but Earth’s early ages - like the Ordovician and Silurian - belonged to stranger things. Think sea scorpions longer than humans and jelly-like organisms that left no ...

Until now, these terrifying giant aquatic reptiles with a bulky skull and powerful jaws were thought to be sea-dwelling predators, exclusively hunting in the oceans. Now, a 66-million-year-old ...

A giant ocean predator that terrorised the seas during the time of the dinosaurs may have also hunted in rivers, a tooth fossil discovered in North Dakota suggests. The extinct lizard-like reptile ...

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

Amongst the most enduring mythical creatures, which were present in so many ancient cultures, are the dragons. Appearing frequently in folklore and tales from China in the east to Europe in the west, ...

A "most remarkable" monster's fossilized remains from Jurassic Germany is a never-before-seen species, a new study reports. The marine reptile, which swam in prehistoric oceans about 183 million years ...