Elasmosaurus platyurus (Cope, 1868) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata family Elasmosauridae genus Elasmosaurus species Elasmosaurus platyurus Name Synonyms Cimoliosaurus platyurus (Cope, 1868) Discosaurus carinatus Cope, 1868 Homonyms Elasmosaurus platyurus (Cope, 1868)