Trinacromerum bentonianum Cragin, 1888 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata family Polycotylidae genus Trinacromerum species Trinacromerum bentonianum Name Synonyms Ceraunosaurus brownorum (Thurmond, 1968) Dolichorhynchops willistoni (Riggs, 1944) Trinacromerum anonymum Williston, 1903 Trinacromerum brownorum (Thurmond, 1968) Trinacromerum willistoni (Riggs, 1944) Homonyms Trinacromerum bentonianum Cragin, 1888