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Mollusca (132 848)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 011)
Class Caudofoveata (143)
Class Cephalopoda (1 834)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (102 752)
Subclass Amphigastropoda † (396)
Subclass Angiogastropoda represented as Gastropoda
Subclass Apogastropoda
Subclass Caenogastropoda (53 669)
Subclass Gastropoda incertae sedis (308)
Infraclass Tretospira †
Superfamily Archinacelloidea Knight, 1952 † (51)
Superfamily Clisospiroidea S. A. Miller, 1889 † (17)
Superfamily Euomphaloidea C. A. White, 1877 † (77)
Family Euomphalidae C. A. White, 1877 † (40)
Family Euomphalopteridae Koken, 1896 † (7)
Family Helicotomidae Wenz, 1938 † (5)
Family Lesueurillidae P. J. Wagner, 2002 † (5)
Family Omphalocirridae Wenz, 1938 † (2)
Family Omphalotrochidae Knight, 1945 † (8)
Genus Coronopsis Waterhouse, 1963 † (1)
Genus Omphalotrochus Meek, 1864 † (7)
Species Omphalotrochus barchatovae B. K. Likharev, 1974 †
Species Omphalotrochus canaliculatus (Trautschold, 1879) †
Subspecies Omphalotrochus canaliculatus canaliculatus (Trautschold, 1879) † accepted as Omphalotrochus canaliculatus (Trautschold, 1879) †
Subspecies Omphalotrochus canaliculatus uerjagensis B. K. Likharev, 1974 † accepted as Omphalotrochus uerjagensis B. K. Likharev, 1974 †
Subspecies Omphalotrochus canaliculatus uralicus B. K. Likharev, 1974 † accepted as Omphalotrochus uralicus B. K. Likharev, 1974 †
Species Omphalotrochus kalitvaensis B. K. Likharev, 1940 †
Species Omphalotrochus sulensis B. K. Likharev, 1974 †
Species Omphalotrochus timanicus B. K. Likharev, 1974 †
Species Omphalotrochus uerjagensis B. K. Likharev, 1974 †
Species Omphalotrochus uralicus B. K. Likharev, 1974 †
Family Pycnomphalidae Peel, 1984 † (10)
Family Straparollinidae P. J. Wagner, 2002 †
Superfamily Loxonematoidea Koken, 1889 † (30)
Superfamily Ophiletoidea Koken, 1907 † (9)
Superfamily Oriostomatoidea Koken, 1896 † (6)
Superfamily Palaeotrochoidea Knight, 1956 † (2)
Superfamily Straparollinoidea P. J. Wagner, 2002 † accepted as Euomphaloidea C. A. White, 1877 †
Superfamily Trochonematoidea Zittel, 1895 † (26)
Family Ceratopeidae Yochelson & Bridge, 1957 † accepted as Raphistomatidae Koken, 1896 †
Family Codonocheilidae S. A. Miller, 1889 †
Family Craspedostomatidae Wenz, 1938 †
Family Crassimarginatidae Frýda, Blodgett & Lenz, 2002 †
Family Discohelicidae M. Schröder, 1995 † (41)
Family Isospiridae Wangberg-Eriksson, 1964 †
Family Opisthonematidae Yu, 1976 † accepted as Yuopisthonematidae Nützel, 2017 †
Family Paraturbinidae Cossmann, 1916 † (7)
Family Pragoserpulinidae Frýda, 1998 † (1)
Family Raphistomatidae Koken, 1896 † (25)
Family Rhytidopilidae Starobogatov, 1976 †
Family Scoliostomatidae Frýda, Blodgett & Lenz, 2002 †
Family Sinuopeidae Wenz, 1938 † (8)
Family Yuopisthonematidae Nützel, 2017 † (1)
Genus Alciope A. Adams, 1861
Genus Buccinites Gesner, 1758
Genus Eesticonus Peel, 2024 † (1)
Genus Eiserhardtia Frýda, 2000 † (1)
Genus Eocryphispira X.-H. Yu, 1987 † (1)
Genus Peverilia Arkell, 1941 † (1)
Genus Phanerotinus Sowerby, 1844 † (1)
Genus Rhenomphalus Bandel & Frýda, 1998 † (1)
Genus Solandangella Horný, 1995 † (1)
Genus Toxonema J. Böhm, 1895 † accepted as Undularia Koken, 1892 †
Genus Undularia Koken, 1892 †
Genus Vayssieria Fenaux, 1942
Subclass Heterobranchia (39 172)
Subclass Neomphaliones accepted as Vetigastropoda
Subclass Neritimorpha (1 914)
Subclass Orthogastropoda represented as Gastropoda
Subclass Patellogastropoda (511)
Subclass Prosobranchia
Subclass Psilogastropoda represented as Gastropoda
Subclass Vetigastropoda (6 782)
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 (1 377)
Class Polyplaxiphora accepted as Polyplacophora
Class Rostroconchia † (64)
Class Scaphopoda (752)
Class Solenoconchia accepted as Scaphopoda
Class Solenogastres (313)
Subclass Chaetodermomorpha accepted as Caudofoveata