Circulus hendersoni (Olsson & McGinty, 1958) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Vitrinellidae genus Circulus species Circulus hendersoni Name Homonyms Circulus hendersoni (Olsson & McGinty, 1958) Circulus hendersoni (Dall, 1927)