Definition that contains ornithischian dinosaur
- stegosaurus herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- genus pisanosaurus primitive ornithischian dinosaur found in Argentina; early Triassic
- stegosaur stenops herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- genus staurikosaurus primitive ornithischian dinosaur found in Brazil
- stegosaur herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
- hadrosaur any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
- duck-billed dinosaur any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
- hadrosaurus any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic