MolluscaBase - browser

Between brackets is the number of accepted species

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Mollusca (133 313)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 086)
Class Caudofoveata (143)
Class Cephalopoda (1 921)
Subclass Coleoidea (1 150)
Subclass Endoceratia † (34)
Subclass Multiceratia † (307)
Order Bisonoceratida † (36)
Order Cyrtocerinida †
Order Discosorida † (11)
Order Ellesmeroceratida † (185)
Order Oncoceratida † (75)
Superfamily Rutoceratoidea Hyatt, 1884 † (10)
Family Acleistoceratidae Flower, 1950 † (2)
Family Allumettoceratidae Flower, 1946 † accepted as Tripteroceratidae Flower, 1941 †
Family Archiacoceratidae C. Teichert, 1939 † (1)
Family Brevicoceratidae Flower, 1945 † (4)
Genus Brevicoceras Flower, 1938 † (2)
Genus Cerovoceras Kröger, 2008 † (2)
Species Cerovoceras brevidomus Kröger, 2008 †
Species Cerovoceras fatimi Kröger, 2008 †
Family Diestoceratidae Foeste, 1926 † (8)
Family Hemiphragmoceratidae Foeste, 1926 †
Family Jovellaniidae Foord, 1888 † (5)
Family Karoceratidae C. Teichert, 1939 † (3)
Family Nothoceratidae Fischer, 1882 † (2)
Family Oncoceratidae Hyatt, 1884 † (31)
Family Oonoceratidae Flower, 1942 † (2)
Family Phthanoncoceratidae D. H. Evans & A. H. King, 1990 † (5)
Family Poterioceratidae Foord, 1888 †
Family Trimeroceratidae Zittel, 1900 †
Family Tripteroceratidae Flower, 1941 † (1)
Family Valcouroceratidae Flower, 1946 † (1)
Genus Gomphoceras J. de C. Sowerby, 1839 †
Genus Graciloceras Flower, 1943 †
Genus Gyroceras Owen, 1844 †
Subclass Nautiloida (171)
Subclass Orthoceratia † (216)
Subclass Plectronoceratia † (16)
Subclass Tarphyceratia † (27)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (103 049)
Class Lamellibranchiata accepted as Bivalvia
Class Loricata accepted as Polyplacophora
Class Mollusca incertae sedis † (372)
Class Monoplacophora (229)
Class Pelecypoda accepted as Bivalvia
Class Polyplacophora (1 381)
Class Polyplaxiphora accepted as Polyplacophora
Class Rostroconchia † (64)
Class Scaphopoda (754)
Class Solenoconchia accepted as Scaphopoda
Class Solenogastres (313)
Subclass Chaetodermomorpha accepted as Caudofoveata