Between brackets is the number of accepted species

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- Mollusca (132 738)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 984)
- Class Caudofoveata (143)
- Class Cephalopoda (1 830)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 673)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 618)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 917)
- Order Caenogastropoda incertae sedis (7 675)
- Order Littorinimorpha (17 166)
- Order Neogastropoda (23 713)
- Superfamily Buccinoidea Rafinesque, 1815 (5 253)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 671)
- 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 (317)
- 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)
- Genus Acmaturris Woodring, 1928 (4)
- Genus Adelocythara Woodring, 1928 † (1)
- Genus Agathotoma Cossmann, 1899 (30)
- Genus Amblyacrum Cossmann, 1889 † (12)
- Genus Anticlinura Thiele, 1934 (6)
- Genus Antiguraleus A. W. B. Powell, 1942 (35)
- Genus Apispiralia Laseron, 1954 (3)
- Genus Apitua Laseron, 1954 (1)
- Genus Bactrocythara Woodring, 1928 (9)
- Genus Bela Leach, 1847 (73)
- Genus Belalora A. W. B. Powell, 1951 (4)
- Genus Belidaphne Vera-Peláez, 2002 † (2)
- Genus Bellacythara J. H. McLean, 1971 (1)
- Genus Benthomangelia Thiele, 1925 (23)
- Genus Brachycythara Woodring, 1928 (10)
- Genus Buchozia Bayan, 1873 † (9)
- Genus Cacodaphnella Pilsbry & H. N. Lowe, 1932 (1)
- Genus Canetoma Bartsch, 1941 accepted as Propebela Iredale, 1918
- Genus Cithara [sic] accepted as Cythara Schumacher, 1817
- Genus Citharomangelia Kilburn, 1992 (12)
- Genus Clinuromella Beets, 1943 accepted as Anticlinura Thiele, 1934
- Genus Crassauris Garvie, 2013 † (1)
- Genus Cryoturris Woodring, 1928 (15)
- Genus Curtitoma Bartsch, 1941 (24)
- Genus Cythara Schumacher, 1817 (5)
- Genus Cytharella Monterosato, 1875 accepted as Mangelia Risso, 1826
- Genus Cytharopsis A. Adams, 1865 (5)
- Genus Etallonia Deshayes, 1862 † accepted as Oenopota (Buchozia) Bayan, 1873 †
- Genus Etremella Makiyama, 1927 † (1)
- Genus Eucithara P. Fischer, 1883 (100)
- Genus Euguraleus Cotton, 1947 accepted as Guraleus Hedley, 1918
- Species Euguraleus anisus Cotton, 1947 accepted as Guraleus anisus (Cotton, 1947)
- Species Euguraleus subnitidus (Ludbrook, 1941) † accepted as Guraleus subnitidus Ludbrook, 1941 †
- Species Euguraleus tasmanicus (Tenison Woods, 1876) accepted as Guraleus tasmanicus (Tenison Woods, 1876)
- Species Euguraleus thornleyanus Laseron, 1954 accepted as Guraleus thornleyanus (Laseron, 1954)
- Genus Euryentmema Woodring, 1928 (2)
- Genus Euryentmena accepted as Euryentmema Woodring, 1928
- Genus Fehria van Aartsen, 1988 accepted as Bela Leach, 1847
- Genus Funitoma Bartsch, 1941 accepted as Propebela Iredale, 1918
- Genus Fusiguraleus A. W. B. Powell, 1942 † (22)
- Genus Genotina Vera-Peláez, 2004 (2)
- Genus Gingicithara Kilburn, 1992 (8)
- Genus Ginnania Monterosato, 1884 accepted as Bela Leach, 1847
- Genus Glabrocythara Fargo, 1953 † (2)
- Genus Glyphoturris Woodring, 1928 (3)
- Genus Granotoma Bartsch, 1941 (5)
- Genus Granoturris Fargo, 1953 (2)
- Genus Guraleus Hedley, 1918 (47)
- Genus Hemicythara Kuroda & Oyama, 1971 (2)
- Genus Heterocithara Hedley, 1922 (17)
- Genus Ichnusa Jeffreys, 1847 accepted as Bela Leach, 1847
- Genus Ithycythara Woodring, 1928 (29)
- Genus Kurtzia Bartsch, 1944 (6)
- Genus Kurtziella Dall, 1918 (17)
- Genus Kurtzina Bartsch, 1944 (3)
- Genus Kyllinia Garilli & Galletti, 2007 (2)
- Genus Leiocithara Hedley, 1922 (14)
- Genus Leiocythara [sic] accepted as Leiocithara Hedley, 1922
- Genus Liracraea Odhner, 1924 (7)
- Genus Lorabela A. W. B. Powell, 1951 (4)
- Genus Lyromangelia Monterosato, 1917 (2)
- Genus Lyropleura Locard, 1897 accepted as Kurtziella Dall, 1918
- Genus Macteola Hedley, 1918 (6)
- Genus Magilia [sic] accepted as Mangelia Risso, 1826
- Genus Mangelia Risso, 1826 (146)
- Genus Mangilia Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Mangelia Risso, 1826
- Genus Mangiliella Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Mangelia Risso, 1826
- Genus Marita Hedley, 1922 (7)
- Genus Mitraguraleus Laseron, 1954 (1)
- Genus Nematoma Bartsch, 1941 accepted as Curtitoma Bartsch, 1941
- Genus Neoguraleus A. W. B. Powell, 1939 (22)
- Genus Nodotoma Bartsch, 1941 accepted as Oenopota Mörch, 1852
- Genus Notocytharella Hertlein & A. M. Strong, 1955 (3)
- Genus Notopropebela N. Sánchez, C. Damborenea & Pastorino, 2023 (3)
- Genus Obesotoma Bartsch, 1941 (18)
- Genus Obestoma [sic] accepted as Obesotoma Bartsch, 1941
- Genus Oenopota Mörch, 1852 (53)
- Genus Oenopotella A. Sysoev, 1988 (1)
- Genus Papillocithara Kilburn, 1992 (2)
- Genus Paraguraleus A. W. B. Powell, 1944 (7)
- Genus Paraspirotropis Sysoev & Kantor, 1984 (1)
- Genus Parviterebra Pilsbry, 1904 (7)
- Genus Perimangelia J. H. McLean, 2000 (2)
- Genus Petrafixia Cossmann, 1901 † (4)
- Genus Platycythara Woodring, 1928 (4)
- Genus Propebela Iredale, 1918 (55)
- Genus Pseudomangelia Sabelli & Spada, 2023 (2)
- Genus Pseudoraphitoma [sic] accepted as Pseudorhaphitoma O. Boettger, 1895
- Genus Pseudorhaphitoma O. Boettger, 1895 (58)
- Genus Pyrgocythara Woodring, 1928 (31)
- Genus Rissomangelia Monterosato, 1917 accepted as Mangelia Risso, 1826
- Genus Rubellatoma Bartsch & Rehder, 1939 (3)
- Genus Saccharoturris Woodring, 1928 (3)
- Genus Scabrella Hedley, 1918 accepted as Asperdaphne Hedley, 1922
- Genus Smithia Monterosato, 1884 accepted as Smithiella Monterosato, 1890
- Genus Smithiella Monterosato, 1890 (1)
- Genus Sorgenfreispira Moroni, 1979 (13)
- Genus Stellatoma Bartsch & Rehder, 1939 (3)
- Genus Suturocythara E. F. García, 2008 (1)
- Genus Tenaturris Woodring, 1928 (13)
- Genus Toxicochlespira Sysoev & Kantor, 1990 (1)
- Genus Tritonimangilia K. Martin, 1914 (1)
- Genus Turritoma Bartsch, 1941 accepted as Propebela Iredale, 1918
- Genus Turritomella Bartsch, 1941 accepted as Propebela Iredale, 1918
- Genus Venustoma Bartsch, 1941 (2)
- Genus Vexiguraleus A. W. B. Powell, 1942 † (4)
- Genus Vielliersia Monterosato, 1884 accepted as Villiersia Monterosato, 1884
- Genus Villiersia Monterosato, 1884 accepted as Mangelia Risso, 1826
- Genus Villiersiella Monterosato, 1890 (2)
- Genus Vitricythara Fargo, 1953 (1)
- Genus Widalli Bogdanov, 1986 accepted as Curtitoma Bartsch, 1941
- 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 (1 156)
- 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 (39 153)
- 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