User blog comment:John Alfred Hammond, CEO/Civilized Talk on the Pointers to JP:TG as Canon/@comment-17754282-20141126071549

On the issue of the Mosasaur, I fail to see how its inclusion in Jurassic World proves that it was also present in the original park. There is nothing in the original film that implys the existance of a marine facility, and nor was there anything to suggest it in amy other medium until that game turned up.

If anyone can argue that the mosasaur in Jurassic world is proof that it was in the original park, then surely it can be argued that Dimorphodon, Suchomimus, Microceratus and Edmontosaurus were all in the original park too.