| ALLOSAURUS | • allosaurus n. A large, carnivorous dinosaur, of genus Allosaurus, that lived in the Jurassic period. • Allosaurus prop.n. A taxonomic genus within the family Allosauridae – theropod dinosaurs. • ALLOSAURUS n. a kind of dinosaur. |
| ANKYLOSAUR | • ankylosaur n. Synonym of ankylosaurus. • ANKYLOSAUR n. a kind of dinosaur with a club tail, also ANKYLOSAURUS. |
| APATOSAURS | • apatosaurs n. Plural of apatosaur. • APATOSAUR n. a kind of long-necked dinosaur, also APATOSAURUS. |
| ARCHOSAURS | • archosaurs n. Plural of archosaur. • ARCHOSAUR n. any of a subclass of reptiles comprising pterosaurs, dinosaurs and crocodilians. |
| BRONTOSAUR | • brontosaur n. Any member of the genus Brontosaurus. • BRONTOSAUR n. any of a genus of large sauropod dinosaurs of the Jurassic, also BRONTOSAURUS. |
| CARNOSAURS | • carnosaurs n. Plural of carnosaur. • CARNOSAUR n. a meat-eating dinosaur. |
| COTYLOSAUR | • cotylosaur n. (Paleontology, dated) A member of the Cotylosauria, a synonym of the family †Captorhinidae, the earliest… • COTYLOSAUR n. an extinct primitive reptile with massive body and short legs. |
| DEINOSAURS | • deinosaurs n. Plural of deinosaur. • DEINOSAUR n. any of a group of extinct reptiles, also DINOSAUR. |
| DINOSAURIC | • dinosauric adj. (Rare) Dinosaurian. • DINOSAURIC adj. of or like a dinosaur, also DINOSAURIAN. |
| ELASMOSAUR | • elasmosaur n. Any plesiosaur of the genus Elasmosaurus. • ELASMOSAUR n. a very long-necked extinct marine reptile, a type of plesiosaur. |
| HADROSAURS | • hadrosaurs n. Plural of hadrosaur. • HADROSAUR n. a bird-hipped dinosaur of the Cretaceous. |
| MEGALOSAUR | • megalosaur n. A carnivorous dinosaur of the family Megalosauridae. • MEGALOSAUR n. a large dinosaur, also MEGALOSAURIAN, MEGALOSAURUS. |
| PELYCOSAUR | • pelycosaur n. Any of a group of basal or primitive Late Paleozoic synapsid amniotes, part of a polyphyletic grade… • PELYCOSAUR n. a kind of dinosaur. |
| PLESIOSAUR | • plesiosaur n. Any of several extinct marine reptiles, of the order Plesiosauria, from the Jurassic and Cretaceous periods. • PLESIOSAUR n. any of a group of extinct marine reptiles of Mesozoic times. |
| PTEROSAURS | • pterosaurs n. Plural of pterosaur. • PTEROSAUR n. a pterodactyl, also PTEROSAURIAN. |
| STEGOSAURS | • stegosaurs n. Plural of stegosaur. • STEGOSAUR n. a herbivorous dinosaur of the Jurassic period, also STEGOSAURUS. |
| TELEOSAURS | • teleosaurs n. Plural of teleosaur. • TELEOSAUR n. an extinct marine crocodile, having a slender snout and short front legs. |
| TITANOSAUR | • titanosaur n. Any member of the taxonomic groups Titanosauria or Titanosauroidea of diverse sauropod dinosaurs including… • TITANOSAUR n. a very large dinosaur. |