Between brackets is the number of accepted species

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- Mollusca (132 791)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 009)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 697)
- Subclass Amphigastropoda † (390)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 636)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 918)
- Order Caenogastropoda incertae sedis (7 676)
- Order Littorinimorpha (17 179)
- Order Neogastropoda (23 716)
- Superfamily Buccinoidea Rafinesque, 1815 (5 253)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 674)
- Family Acusidae J. E. Gray, 1853 accepted as Terebridae Mörch, 1852
- Family Borsoniidae Bellardi, 1875 (571)
- Family Bouchetispiridae Kantor, E. E. Strong & Puillandre, 2012 (2)
- Family Clathurellidae H. Adams & A. Adams, 1858 (334)
- Family Clavatulidae J. E. Gray, 1853 (438)
- Family Clavidae T. L. Casey, 1904 accepted as Drilliidae Olsson, 1964
- Family Clionellidae W. Stimpson, 1865 accepted as Clavatulidae J. E. Gray, 1853
- Family Cochlespiridae A. W. B. Powell, 1942 (114)
- Family Conidae J. Fleming, 1822 (1 393)
- Family Conilithidae J. K. Tucker & M. Tenorio, 2009 accepted as Conidae J. Fleming, 1822
- Family Conoidea incertae sedis (318)
- Subfamily Amuletinae Bandel & Dockery, 2016 † (5)
- Genus Amekicythara Eames, 1957 † (1)
- Genus Amyssodropa MacNeil, 1984 † (1)
- Genus Austroclavus A. W. B. Powell, 1942 † (11)
- Genus Austrosullivania Stilwell & Zinsmeister, 1992 (2)
- Genus Austrotoma H. J. Finlay, 1924 (30)
- Genus Bathyferula Stahlschmidt, D. Lamy & Fraussen, 2012 (2)
- Genus Beretra Stephenson, 1941 † (3)
- Genus Birmadrillia Shuto, 1984 † (1)
- Genus Calverturris Petuch, 1993 † (1)
- Genus Campylacrum H. J. Finlay & Marwick, 1937 † (2)
- Genus Caritoma Jung, 1971 † (1)
- Genus Chesaclava Petuch, 1988 † (1)
- Genus Cinguliturris A. W. B. Powell, 1964 (1)
- Genus Clavidrupa MacNeil, 1984 † (1)
- Genus Clinuropsis É. Vincent, 1913 † (4)
- Genus Cochlespirella Casey, 1903 † (1)
- Genus Cochlespiropsis T. L. Casey, 1904 † (1)
- Genus Cosmasyrinx Marwick, 1931 † (8)
- Genus Cryptoborsonia A. W. B. Powell, 1944 † (2)
- Genus Cryptocordieria D. C. Long, 1981 † (1)
- Genus Cryptomella H. J. Finlay, 1924 (2)
- Genus Dallora Olsson, 1964 † (1)
- Genus Diptygmendon Chavan, 1947 † (2)
- Genus Dolostoma Woodring, 1970 † (2)
- Genus Domenginella H. E. Vokes, 1939 † (10)
- Genus Echinoturris A. W. B. Powell, 1942 † (1)
- Genus Eodrillia T. L. Casey, 1904 † (2)
- Genus Eopleurotoma Cossmann, 1889 † (61)
- Subgenus Eopleurotoma (Oxyacrum) Cossmann, 1889 † accepted as Oxyacrum Cossmann, 1889 †
- Species Eopleurotoma adela (Cossmann & Pissaro, 1909) †
- Species Eopleurotoma adolescens G. D. Harris, 1937 †
- Species Eopleurotoma albicans Brébion, 1992 †
- Species Eopleurotoma albirupsis G. D. Harris, 1947 †
- Species Eopleurotoma altispira (Whitfield, 1892) †
- Species Eopleurotoma arctoplicata (Staadt, 1913) †
- Species Eopleurotoma atacica Pacaud, 2021 †
- Species Eopleurotoma baylei (de Boury, 1899) †
- Species Eopleurotoma bella Tracey & Craig, 2019 †
- Species Eopleurotoma bernayi (de Boury, 1899) †
- Species Eopleurotoma bezanconi (de Boury, 1899) †
- Species Eopleurotoma bicatena (Lamarck, 1804) †
- Species Eopleurotoma bicincta Tracey & Craig, 2019 †
- Species Eopleurotoma bimoniata (Aldrich, 1921) †
- Species Eopleurotoma boxleyi Tracey & Craig, 2019 †
- Species Eopleurotoma brebionis J. K. Tucker & Le Renard, 1993 † accepted as Eopleurotoma flexicosta (de Boury, 1899) †
- Species Eopleurotoma brevicula (Deshayes, 1834) †
- Species Eopleurotoma cainei (G. D. Harris, 1899) †
- Species Eopleurotoma carya G. D. Harris, 1937 †
- Variety Eopleurotoma carya var. carola G. D. Harris, 1937 †
- Species Eopleurotoma cedilla (F. E. Edwards, 1861) †
- Species Eopleurotoma christinae Tracey & Craig, 2019 †
- Species Eopleurotoma cochlea G. D. Harris, 1937 †
- Species Eopleurotoma comma (J. Sowerby, 1816) †
- Species Eopleurotoma curvicosta (Lamarck, 1804) †
- Species Eopleurotoma dalimieri (Cossmann, 1919) †
- Species Eopleurotoma decussata (Lamarck, 1804) †
- Species Eopleurotoma distans (Deshayes, 1865) †
- Species Eopleurotoma distanticosta (Cossmann & Pissarro, 1900) †
- Species Eopleurotoma douvillei (Cossmann, 1923) †
- Species Eopleurotoma expedita (Deshayes, 1865) †
- Species Eopleurotoma fayellensis (de Boury, 1899) †
- Species Eopleurotoma flexicosta (de Boury, 1899) †
- Species Eopleurotoma fluctuosa (Deshayes, 1865) †
- Species Eopleurotoma fowleri Tracey, 1996 †
- Species Eopleurotoma francisci (de Raincourt, 1876) †
- Species Eopleurotoma fresvillensis (Cossmann & Pissarro, 1900) †
- Species Eopleurotoma granifera (Deshayes, 1834) †
- Species Eopleurotoma hastula Tracey & Craig, 2019 †
- Species Eopleurotoma houdasi (de Boury, 1899) †
- Species Eopleurotoma inculta (J. De C. Sowerby, 1850) †
- Species Eopleurotoma insueta (de Boury, 1899) †
- Species Eopleurotoma lajonkairii (Deshayes, 1834) †
- Species Eopleurotoma larteti (Deshayes, 1865) †
- Species Eopleurotoma longicauda Brébion, 1992 †
- Species Eopleurotoma molineuxae Garvie, 2013 †
- Species Eopleurotoma morelleti J. K. Tucker & Le Renard, 1993 † accepted as Eopleurotoma multinoda (Lamarck, 1804) †
- Species Eopleurotoma multicostata (Deshayes, 1834) †
- Species Eopleurotoma multinoda (Lamarck, 1804) †
- Species Eopleurotoma oligocolpa (Cossmann, 1889) †
- Species Eopleurotoma palmeri Le Renard, 1994 †
- Species Eopleurotoma plicaria (Deshayes, 1865) †
- Species Eopleurotoma pourcyensis (Cossmann, 1902) †
- Species Eopleurotoma procera (Cossmann & Pissarro, 1900) †
- Species Eopleurotoma propinqua (Deshayes, 1834) †
- Species Eopleurotoma scitula Tracey & Craig, 2019 †
- Species Eopleurotoma serta (Dollfus, 1899) †
- Species Eopleurotoma specialis (de Boury, 1899) †
- Species Eopleurotoma spreta (Deshayes, 1865) †
- Species Eopleurotoma striatularis (Deshayes, 1865) †
- Species Eopleurotoma sulcatina (Cossmann, 1889) †
- Species Eopleurotoma tremenda (de Boury, 1899) †
- Species Eopleurotoma undata (Lamarck, 1804) †
- Species Eopleurotoma vauvillensis Tracey & Craig, 2019 †
- Genus Eoscobinella A. W. B. Powell, 1942 † (2)
- Genus Eosurcula T. L. Casey, 1904 † (9)
- Genus Eothesbia H. J. Finlay & Marwick, 1937 † (1)
- Genus Eoturris H. J. Finlay & Marwick, 1937 † (3)
- Genus Fenestrodaphne A. W. B. Powell, 1944 † (1)
- Genus Fusiclathurella Shuto, 1980 † (1)
- Genus Fusiclavus Shuto, 1980 † (1)
- Genus Fusimilis Stephenson, 1941 † (2)
- Genus Fusosurcula Is. Taki, 1951 accepted as Orthosurcula T. L. Casey, 1904 †
- Genus Glibertturricula Cadée & A.W. Janssen, 1985 † (1)
- Genus Glyptotoma Casey, 1904 † (3)
- Genus Hemipleurotoma Cossmann, 1889 † (6)
- Genus Hesperiturris J. A. Gardner, 1945 † (2)
- Genus Ingaunoturricula M. P. Bernasconi & Robba, 1984 † (1)
- Genus Insolentia Finlay, 1926 † (7)
- Genus Javaclavus Shuto, 1980 † (1)
- Genus Johannaia D. C. Long, 1981 † (1)
- Genus Lepicythara Olsson, 1964 † (3)
- Genus Lictoconcha De Gregorio, 1880 †
- Genus Lirasyrinx A. W. B. Powell, 1942 † accepted as Parasyrinx H. J. Finlay, 1924 †
- Genus Liratomina A. W. B. Powell, 1944 (3)
- Genus Lyrosurcula T. L. Casey, 1904 † (5)
- Genus Mangaoparia Vella, 1954 † (1)
- Genus Maoricrassus Vella, 1954 † (1)
- Genus Mappingia Ludbrook, 1941 † (2)
- Genus Mariadrillia Petuch, 1988 † (1)
- Genus Mariaturricula Petuch, 1988 † (1)
- Genus Marshallaria H. J. Finlay & Marwick, 1937 † (11)
- Genus Mitodrillia MacNeil, 1984 † (1)
- Genus Mitraeturricula Shuto, 1980 † (1)
- Genus Mitrelloturris Eames, 1957 † (1)
- Genus Moniliopsis Conrad, 1865 † (2)
- Genus Muteluma Kiel & Bandel, 2003 † (1)
- Genus Notogenota A. W. B. Powell, 1942 † (4)
- Genus Optoturris A. W. B. Powell, 1944 † (3)
- Genus Oxyacrum Cossmann, 1889 † (2)
- Genus Pachycythara Woodring, 1928 † (1)
- Genus Pachyturris Olsson, 1964 † (1)
- Genus Paramarshallena D. C. Long, 1981 † (1)
- Genus Parasyngenochilus D. C. Long, 1981 † (3)
- Genus Parasyrinx H. J. Finlay, 1924 † (7)
- Genus Pentagoniturricula Shuto, 1980 † (1)
- Genus Procerapex Hickman, 1976 † (1)
- Genus Protogemmula Oyama, 1966 † (1)
- Genus Protosurcula T. L. Casey, 1904 † (1)
- Genus Pseudodrillia Luković, 1924 †
- Genus Pseudoinquisitor A. W. B. Powell, 1942 † accepted as Inquisitor Hedley, 1918 (1)
- Genus Pyramitoma K. Martin, 1914 † (1)
- Genus Remnita Stephenson, 1941 † (2)
- Genus Rhiglyhostoma Woodring, 1970 †
- Genus Roualtia [sic] † accepted as Rouaultia Bellardi, 1877 †
- Genus Rugobela H. J. Finlay, 1924 † (11)
- Genus Sinistrella O. Meyer, 1887 (2)
- Genus Sullivania G. D. Harris & K. van W. Palmer, 1947 † (1)
- Genus Surculites Conrad, 1865 † (11)
- Genus Syngenochilus A. W. B. Powell, 1944 † (2)
- Genus Tahudrillia A. W. B. Powell, 1942 † (1)
- Genus Tahuia P. A. Maxwell, 1992 † (2)
- Genus Tholitoma H. J. Finlay & Marwick, 1937 † accepted as Cosmasyrinx (Tholitoma) H. J. Finlay & Marwick, 1937 †
- Genus Transmariaturris Petuch, 1993 † (2)
- Genus Tropisurcula T. L. Casey, 1904 † (2)
- Genus Trypanotoma Cossmann, 1893 † (2)
- Genus Turrinosyrinx Hickman, 1976 † (3)
- Genus Varicobela T. L. Casey, 1904 † (1)
- Genus Veruturris A. W. B. Powell, 1944 (4)
- Genus Vincenturris Adegoke, 1977 † (1)
- Genus Waitara Marwick, 1931 † accepted as Thatcheria Angas, 1877
- Genus Zeatoma P. A. Maxwell, 1992 † (6)
- Family Conorbidae De Gregorio, 1880 (19)
- Family Conusidae J. Fleming, 1822 accepted as Conidae J. Fleming, 1822
- Family Cryptoconidae Cossmann, 1896 † (22)
- Family Drilliidae Olsson, 1964 (769)
- Family Fusiturridae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias & Puillandre, 2018 (19)
- Family Horaiclavidae Bouchet, Kantor, Sysoev & Puillandre, 2011 (315)
- Family Mangeliidae P. Fischer, 1883 (1 064)
- Family Marshallenidae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias & Puillandre, 2018 (5)
- Family Melatomidae Gill, 1871 accepted as Clavatulidae J. E. Gray, 1853
- Family Mitrolumnidae Sacco, 1904 accepted as Mitromorphidae T. L. Casey, 1904
- Family Mitromorphidae T. L. Casey, 1904 (219)
- Family Pervicaciidae Rudman, 1969 accepted as Terebridae Mörch, 1852
- Family Pleurotomidae J. E. Gray, 1838 accepted as Turridae H. Adams & A. Adams, 1853 (1838)
- Family Pseudomelatomidae J. P. E. Morrison, 1966 (781)
- Family Raphitomidae Bellardi, 1875 (1 158)
- Family Strictispiridae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Family Taranteconidae J. K. Tucker & M. Tenorio, 2009 accepted as Conidae J. Fleming, 1822
- Family Terebridae Mörch, 1852 (750)
- Family Thatcheriidae A. W. B. Powell, 1942 accepted as Raphitomidae Bellardi, 1875
- Family Turridae H. Adams & A. Adams, 1853 (1838) (383)
- Subfamily Andoniinae Vera-Peláez, 2002 † accepted as Raphitomidae Bellardi, 1875
- Subfamily Crassispirinae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Subfamily Cytharinae Thiele, 1929 accepted as Mangeliidae P. Fischer, 1883
- Subfamily Daphnellinae T. L. Casey, 1904 accepted as Raphitomidae Bellardi, 1875
- Subfamily Diptychomitrinae Bellardi, 1888 accepted as Mitromorphidae T. L. Casey, 1904
- Subfamily Oenopotinae Bogdanov, 1987 accepted as Mangeliidae P. Fischer, 1883
- Subfamily Pleurotomellinae F. Nordsieck, 1968 accepted as Raphitomidae Bellardi, 1875
- Subfamily Pseudotominae Bellardi, 1875 accepted as Borsoniidae Bellardi, 1875
- Subfamily Pusionellinae J. E. Gray, 1853 accepted as Clavatulidae J. E. Gray, 1853
- Subfamily Taraninae T. L. Casey, 1904 accepted as Raphitomidae Bellardi, 1875
- Subfamily Turriculinae A. W. B. Powell, 1942 accepted as Clavatulidae J. E. Gray, 1853
- Subfamily Zemaciinae Sysoev, 2003 accepted as Borsoniidae Bellardi, 1875
- Subfamily Zonulispirinae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Superfamily Mitroidea Swainson, 1831 (633)
- Superfamily Muricacea accepted as Muricoidea Rafinesque, 1815
- Superfamily Muricoidea Rafinesque, 1815 (2 940)
- Superfamily Neogastropoda incertae sedis (296)
- Superfamily Olivoidea Latreille, 1825 (740)
- Superfamily Pholidotomoidea Cossmann, 1896 † (55)
- Superfamily Pseudolivoidea De Gregorio, 1880 accepted as Olivoidea Latreille, 1825
- Superfamily Pyrifusoidea Bandel & Dockery, 2001 † accepted as Pholidotomoidea Cossmann, 1896 †
- Superfamily Sarganoidea Stephenson, 1923 † accepted as Pholidotomoidea Cossmann, 1896 †
- Superfamily Toxoglossa Troschel, 1848 accepted as Conoidea J. Fleming, 1822
- Superfamily Turbinelloidea Swainson, 1835 (1 252)
- Superfamily Volutoidea Rafinesque, 1815 (3 873)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 156)
- 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