Triquetra Lea, 1852 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Animalia phylum Mollusca class Bivalvia order Unionida family Hyriidae genus Prisodon Name Homonyms Triquetra Medik. Triquetra Conrad, 1846 Triquetra Fairmaire, 1846 Triquetra Blainville, 1828 Triquetra Lea, 1852 Triquetra Mörch, 1853