Lacuna crassior glacialis (Moller, 1842) Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Littorinidae genus Lacuna species Lacuna crassior Name Homonyms Lacuna crassior glacialis (Moller, 1842) Lacuna crassior var. glacialis (Moller, 1842)