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Temporal range: Upper Jurassic
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Infraorder: Ceratosauria
Family: Ceratosauridae
Genus: Ceratosaurus

Ceratosaurus was a predatory dinosaur from the Upper Jurassic period, 156 to 145 million years ago. It was shown in the movie When Dinosaurs Roamed America being killed by an Allosaurus.