Ceratosaurus (frae Greek κέρας/κέρατος, keras/keratos meanin "horn" an σαῦρος/sauros meanin "lizard") wis a predatory theropod dinosaur in the Late Jurassic Period (Kimmeridgian tae Tithonian).

Ceratosaurus
Temporal range: Late Jurassic, 153–148 Ma
Skeleton cast at the Natural History Museum of Utah
Cast o a Ceratosaurus frae the Cleveland Lloyd Quarry, on display at the Natural History Museum of Utah
Scientific classification e
Kinrick: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Faimily: Ceratosauridae
Genus: Ceratosaurus
Marsh, 1884
Species
  • C. nasicornis Marsh, 1884 (teep)
  • ?C. dentisulcatus Madsen & Welles, 2000
  • ?C. magnicornis Madsen & Welles, 2000
Synonyms
  • Megalosaurus nasicornis (Marsh, 1884 [oreeginally Ceratosaurus])