Has Asylum made a movie about that one yet? If not, they should.
It could fight Giganto-Flying Octo-Shark or something.
No, and they should, as it is about time there was another film featuring the Mosasaur, since it is so popular as a documentary subject.
2008 Prehistoric monsters revealed
2009 T-Rex of the Deep
2010 Sea Rex 3D
2014 Mass extinction
The film being 1996's The Land Before Time IV : Journey Through the Mists
Though it did appear on the 3rd episode of the 1st season of Primeval in 2007 and on the 1978 animated TV series Once Upon a Man.
So, Asylum, let's get with it.