Most of us know at least a handful of dinosaur names such as T-rex and raptor, but few are probably familiar with the dinosaur species known as mosasaur. A mosasaur is a marine animal. A newly ...

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 mosasaur tooth discovered alongside a T. rex tooth and a freshwater crocodilian jaw in North Dakota raised new questions ...