This video examines how Mosasaurus compared to other marine predators of its time. Using visual segments from the clip, it ...

Imagine swimming in the ocean and suddenly spotting a creature larger than any shark, faster than any human can sprint, and more vicious than any predator alive today. Meet the Mosasaurus, a marine ...

A 66-million-year-old tooth discovered in North Dakota, USA, suggests that some mosasaurs — extinct lizard-like reptiles that could grow up to 12 metres long — may have hunted in rivers as well as ...

At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs. Mosasaurs had long bodies and were related to both snakes and monitor lizards.

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 ...