1) Bird-footed dinosaur 2) Ceratosaur 3) Theropod 4) Theropod dinosaur 1) Ceratosaur 2) Coelophysis 
Ceratosaurus s meaning `horned lizard`, in reference to the horn on its nose (Greek κερας/κερατος, keras/keratos meaning `horn` and σαυρος/sauros meaning `lizard`), was a large predatory theropod dinosaur from the Late Jurassic Period (Kimmeridgian to Tithonian), found in the Morrison Formation of North America, and the Lou...
• (n.) A carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony horn core on the united nasal bones. See Illustration in Appendix.
large carnivorous dinosaurs whose fossils date from the Late Jurassic Period (159 million to 144 million years ago) in North America and Africa.
Cer`a·to·sau'rus noun [ New Latin , from Greek ke`ras a horn + ... lizard.] (Paleon.) A carnivorous American Jurassic dinosaur allied to the European Megalosaurus. The animal was nearly twenty feet in length, and the skull bears a bony horn core on the united nasal bones. See 
Ceratosaurus was a carnivorous dinosaur of the Jurassic period. Remains of
Ceratosaurus A “horned lizard” from Late Jurassic North America (Colorado and Utah) and East Africa (Tanzania). Named by Othniel Charles Marsh (1831-1899) in 1884.