Petrodus patelliformis McCoy, 1848 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Elasmobranchii family Hybodontidae genus Petrodus species Petrodus patelliformis Name Synonyms Petrodus buttersi Newberry, 1889 Petrodus occidentalis Newberry & Worthen, 1866 Homonyms Petrodus patelliformis McCoy, 1848