Cyclostoma crenulatum Potiez & Michaud, 1836 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Annulariidae genus Diplopoma species Diplopoma crenulatum Name Homonyms Cyclostoma crenulatum G.B.Sowerby I, 1843 Cyclostoma crenulatum Potiez & Michaud, 1838