Baryonyx

Baryonyx was a spinosaurid Theropod Dinosaur, around 30 feet long, that lived in the early Cretaceous of Britain, from 110 to 90 million years ago. It is famous for its crocodile-shaped skull, and huge hand claws for grabbing at fish. The first traces of the animal were found in 1983 and was officially named in 1986.

In Jurassic Park
Baryonyx is seen only on the brochure map in Jurassic Park. Also, Billy guessed the tooth of the Spinosaurus was a Baryonyx.

It was apparently native to Isla Sorna, as it was given as a suggestion for the Spinosaurus that had been just seen by the group, though it was dismissed nearly immediately due to the sail on its back.

Baryonyx appears in the PSX And Sega Saturn Version of The Lost World (supporting the mistake made by Billy Brennan). Here the creatures are depicted as territorial and aggressive, living in coastal caves somewhere along the Island.

In early production of Jurassic Park III, the Baryonyx was originally the main dinosaur of the film, rather than the Spinosaurus. A logo with this animal can be found on this wiki.