? contorta O.F.Müller, 1774 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Gastropoda family Valvatidae Name Homonyms ? contorta King, 1943 ? contorta Koby, 1885 ? contorta Prévot, 1947 ? contorta Ameghino, 1889 ? contorta O.F.Müller, 1774