#genus_Psittacosaurus  most primitive genus of horned dinosaurs; early Cretaceous
  supertype:  reptile_genus__reptilegenu  a genus of reptiles
  member:  psittacosaur
  member of:  suborder_Ceratopsia__Ceratopsia  horned dinosaurs
     member of:  suborder_Marginocephalia__Marginocephalia__marginocephalian  includes bone-headed (pachycephalosaurs) and horned (ceratopsian) dinosaurs
        member of:  order_Ornithischia__Ornithischia  extinct terrestrial reptiles having birdlike pelvises: armored dinosaurs (thyreophorans); bone-headed and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
           member of:  subclass_Archosauria__Archosauria  a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
              member of:  class_Reptilia__Reptilia  class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a body usually covered with scales or horny plates; once the dominant land animals
                 member of:  subphylum_Vertebrata__Vertebrata__Craniata__subphylum_Craniata  fishes; amphibians; reptiles; birds; mammals
                    member of:  phylum_Chordata__Chordata  comprises true vertebrates and animals having a notochord
                       member of:  kingdom_Animalia__Animalia__animal_kingdom  taxonomic kingdom comprising all living or extinct animals

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