Between brackets is the number of accepted species

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- Mollusca (132 851)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 013)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 753)
- Subclass Amphigastropoda † (396)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 670)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 172)
- Infraclass "Lower Heterobranchia" (1 137)
- Superfamily Architectonicoidea J. E. Gray, 1850 (262)
- Superfamily Cimoidea Warén, 1993 (114)
- Family Cimidae Warén, 1993 (112)
- Genus Atomiscala de Boury, 1909 (2)
- Genus Austrorissopsis Grant-Mackie & Chapman-Smith, 1971 (4)
- Genus Bouryiscala Cossmann, 1902 (2)
- Genus Camponaxis Bandel, 1995 (7)
- Genus Cima Chaster, 1896 (15)
- Genus Cioniscus Jeffreys, 1869 accepted as Graphis Jeffreys, 1867
- Genus Coenaculum Iredale, 1924 (7)
- Genus Conusella Gründel, 1999 † (3)
- Genus Cristalloella Bandel, 1995 † (11)
- Subgenus Cristalloella (Cristalloella) Bandel, 1995 † represented as Cristalloella Bandel, 1995 †
- Subgenus Cristalloella (Wonwalica) M. Schröder, 1995 † represented as Cristalloella Bandel, 1995 †
- Species Cristalloella (Wonwalica) bandeli Gründel, 2007 † represented as Cristalloella bandeli Gründel, 2007 †
- Species Cristalloella (Wonwalica) boczarowskii Kaim, 2004 † represented as Cristalloella boczarowskii Kaim, 2004 †
- Species Cristalloella (Wonwalica) delicata Bandel, 1995 † represented as Cristalloella delicata Bandel, 1995 †
- Species Cristalloella (Wonwalica) minuta (M. Schröder, 1995) † represented as Cristalloella minuta (M. Schröder, 1995) †
- Species Cristalloella (Wonwalica) permica Mazaev, 2019 † represented as Cristalloella permica Mazaev, 2019 †
- Species Cristalloella (Wonwalica) pusilla Gründel, 2006 † represented as Cristalloella pusilla Gründel, 2006 †
- Species Cristalloella (Wonwalica) sinuata Bandel, 1995 † represented as Cristalloella sinuata Bandel, 1995 †
- Species Cristalloella bandeli Gründel, 2007 †
- Species Cristalloella boczarowskii Kaim, 2004 †
- Species Cristalloella carinata Gründel, 2006 †
- Species Cristalloella cassiana Bandel, 1995 †
- Species Cristalloella delicata Bandel, 1995 †
- Species Cristalloella minuta (M. Schröder, 1995) †
- Species Cristalloella parva Bandel, Gründel & P. A. Maxwell, 2000 †
- Species Cristalloella permica Mazaev, 2019 †
- Species Cristalloella pusilla Gründel, 2006 †
- Species Cristalloella sinuata Bandel, 1995 †
- Species Cristalloella spiralocostata (Gründel, 1998) †
- Genus Discobasis Cossmann, 1888 † (1)
- Genus Dissopalia Iredale, 1936 accepted as Bouryiscala Cossmann, 1902
- Genus Graphis Jeffreys, 1867 (31)
- Genus Itiscala P. A. Maxwell, 1992 † (2)
- Genus Mifsudia Mietto, Nofroni & Quaggiotto, 2014 (2)
- Genus Neodonaldina Bandel, 1996 † (5)
- Genus Parascala Cotton & Godfrey, 1931 accepted as Coenaculum Iredale, 1924
- Genus Reinbergia Gründel, 2007 † (1)
- Genus Rotfanella Gründel, 1998 † (6)
- Genus Tofanella Bandel, 1995 † (3)
- Genus Unzhispira Guzhov, 2019 † (1)
- Genus Urlocella Gründel, 1998 † (4)
- Genus Usedomella Gründel, 1998 † (5)
- Genus Wonwalica M. Schröder, 1995 † accepted as Cristalloella (Wonwalica) M. Schröder, 1995 †
- Family Tofanellidae Bandel, 1995 † accepted as Cimidae Warén, 1993
- Subfamily Graphidinae J. Barros, Mello, F. Barros, S. Lima, Santos, Cabral & Padovan, 2003 accepted as Cimidae Warén, 1993
- Subfamily Usedomellinae Gründel, 1998 † accepted as Cimidae Warén, 1993
- Genus Larochella A. W. B. Powell, 1927 (2)
- Superfamily Ectobranchia P. Fischer, 1884 accepted as Valvatoidea Gray, 1840
- Superfamily Mathildoidea Dall, 1889 (260)
- Superfamily Omalogyroidea G. O. Sars, 1878 (74)
- Superfamily Orbitestelloidea Iredale, 1917 (64)
- Superfamily Valvatoidea Gray, 1840 (363)
- Infraclass Euthyneura (37 449)
- Infraclass Heterobranchia incertae sedis (478)
- Infraclass Mesoneura (108)
- Infraclass Opisthobranchia
- Infraclass Pulmonata
- 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