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