Tylosaurus

Tylosaurus was a massive mosasaur, reaching 15 metres long. It lived in the :ate Cretaceous, and was a close relative to Mosasaurus. It was a carnivore, and may have hunted in groups to take down large prey. It appeared in Sea Monsters: A Walking with Dinosaurs Trilogy.

More on Tylosaurus - Tylosaurus on Wikipedia

Jurassic Park franchise
Tylosaurus is yet to appear in any Jurassic Park books or movies.

Jurassic Park inspired games
Tylosaurus is number 127 of the Carnivore Threes that can be created in Jurassic Park III: Park Builder.