Einiosaurus procurvicornis Sampson, 1994 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata family Ceratopsidae genus Einiosaurus species Einiosaurus procurvicornis Name Synonyms Styracosaurus makeli Czerkas & Czerkas, 1990 Homonyms Einiosaurus procurvicornis Sampson, 1994