Isognomon spathulatus (Reeve, 1858) Reeve, 1858 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Bivalvia order Ostreida family Isognomonidae genus Isognomon species Isognomon ephippium Name Homonyms Isognomon spathulatus (Reeve, 1858) Reeve, 1858