Platecarpus

Platecarpus was a mosasaur that lived in the United State's oceans in the Late Createcous period. It grew up to 14 ft in length (4.3m).

Jurassic Park Series
Platecarpus is not mentioned or seen in the novels or in the films, but it makes an appearance as a unlockable animal in the Android/iOS game, Jurassic Park:Builder.

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 * It is interesting to note the remains found of the Platecarpus contains extremely rare skin impressions and pigments around the nostrils.
 * The fish-shaped tail fin of the Platecarpus demonstrates Mosasaurs such as Tylosaurus and Platecarpus were rather powerful swimmers, and not eel-like swimmers as previously widely accepted.