? triquetra Rafinesque, 1820 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Bivalvia order Unionida family Unionidae genus Epioblasma species Epioblasma triquetra Name Homonyms ? triquetra Rafinesque, 1820 ? triquetra Pers. ? triquetra Conrad, 1838 ? triquetra Seebach, 1862 ? triquetra DeLong & Caldwell, 1936