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Definition of Genus Psittacosaurus
1. Noun. Most primitive genus of horned dinosaurs; early Cretaceous.
Generic synonyms: Reptile Genus
Group relationships: Ceratopsia, Suborder Ceratopsia
Member holonyms: Psittacosaur, Psittacosaurus
Group relationships: Ceratopsia, Suborder Ceratopsia
Member holonyms: Psittacosaur, Psittacosaurus