Rauisuchus

Rauisuchus is a genus of extinct basal archosaur which lived in what is now the Geopark of Paleorrota, Brazil, during the middle Triassic period (240-230 million years ago). It contains one species, R. tiradentes. Named after fossil collector Dr. Wilhelm Rau, Rauisuchus belonged to a group of land-dwelling relatives to crocodiles. These reptiles were among the top predators of their day, eating other reptiles for food and maybe hunting early dinosaurs.

Jurassic Park
Rauisuchus has never appeared or mentioned in any Jurassic Park films or books, it has however appeared in the Dinosaur Field Guide as well as the Jurassic World Dinosaur Field Guide.