Crepidula rugosa naticarum (Williamson, 1905) Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Calyptraeidae genus Crepidula species Crepidula naticarum Name Homonyms Crepidula rugosa naticarum (Williamson, 1905) Crepidula rugosa var. naticarum M.B.Williamson, 1905