Psittacosaurus mongoliensis Osborn, 1923 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata family Psittacosauridae genus Psittacosaurus species Psittacosaurus mongoliensis Name Synonyms Protiguanodon mongoliense Osborn, 1923 Protiguanodon mongoliensis Osborn, 1923 Psittacosaurus guyangensis Cheng, 1982 Psittacosaurus osborni Young, 1932 Psittacosaurus protiguanodonensis Young, 1958 Psittacosaurus tingi Young, 1932 Homonyms Psittacosaurus mongoliensis Osborn, 1923