Psittacosaurus (meaning "parrot reptile") is an extinct genus of ceratopsian dinosaur that lived in Asia during the Early Cretaceous period. Psittacosaurus is been known to swallow stones called gastroliths to help grind their food in their stomach.
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Albertosaurus • Allosaurus • Ankylosaurus • Apatosaurus • Baryonyx • Brachiosaurus • Carnotaurus • Ceratosaurus • Coelophysis • Compsognathus • Corythosaurus • Dilophosaurus • Dimetrodon • Dimorphodon • Gallimimus • Giganotosaurus • Iguanodon • Kentrosaurus • Maiasaura • Monolophosaurus • Mosasaurus • Nanuqsaurus • Ophthalmosaurus • Ouranosaurus • Pachycephalosaurus • Pachyrhinosaurus • Parasaurolophus • Pteranodon • Quetzalcoatlus • Rhamphorhynchus • Spinosaurus • Stegosaurus • Suchomimus • Styracosaurus • Thescelosaurus • Therizinosaurus • Triceratops • Tyrannosaurus rex • Utahraptor • Velociraptor, Pterosaur | ||