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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)
- 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)
- Subgenus Cythara (Cyrtocythara) F. Nordsieck, 1977 accepted as Mangelia Risso, 1826
- Subgenus Cythara (Cytharella) Monterosato, 1875 accepted as Mangelia Risso, 1826
- Subgenus Cythara (Mangelia) Risso, 1826 accepted as Mangelia Risso, 1826
- Subgenus Cythara (Neoguraleus) A. W. B. Powell, 1939 accepted as Neoguraleus A. W. B. Powell, 1939
- Subgenus Cythara (Rissomangelia) accepted as Mangelia Risso, 1826
- Species Cythara (Rissomangelia) bertrandii (Payraudeau, 1826) accepted as Mangelia striolata Risso, 1826
- Subspecies Cythara (Rissomangelia) bertrandii ossea F. Nordsieck, 1977 accepted as Mangelia striolata Risso, 1826
- Subspecies Cythara (Rissomangelia) bertrandii tarentina F. Nordsieck, 1977 accepted as Mangelia striolata Risso, 1826
- Species Cythara (Rissomangelia) compacta F. Nordsieck, 1977 accepted as Mangelia unifasciata (Deshayes, 1835)
- Species Cythara (Rissomangelia) varicosa F. Nordsieck, 1972 accepted as Mangelia unifasciata (Deshayes, 1835)
- Subgenus Cythara (Rugocythara) F. Nordsieck, 1977 accepted as Mangelia Risso, 1826
- Species Cythara abyssicola (Reeve, 1846) accepted as Eucithara vittata (Hinds, 1843)
- Species Cythara adansoni Knudsen, 1952 accepted as Mangelia angolensis Thiele, 1925
- Species Cythara africana (G. B. Sowerby III, 1903) accepted as Citharomangelia africana (G. B. Sowerby III, 1903)
- Species Cythara alfredi (E. A. Smith, 1904) accepted as Pseudorhaphitoma alfredi (E. A. Smith, 1904)
- Species Cythara amplexa (A. Gould, 1860) accepted as Guraleus amplexus (A. Gould, 1860)
- Species Cythara angiostoma Pease, 1868 accepted as Eucithara angiostoma (Pease, 1868)
- Species Cythara anthera J. A. Gardner, 1938 †
- Species Cythara articulata G. B. Sowerby III, 1894 accepted as Eucithara articulata (G. B. Sowerby III, 1894)
- Species Cythara atlantidea Knudsen, 1952 accepted as Bela atlantidea (Knudsen, 1952)
- Species Cythara attenuata (Montagu, 1803) accepted as Mangelia attenuata (Montagu, 1803)
- Species Cythara barbadoides J. A. Gardner, 1938 †
- Species Cythara basilissa J. A. Gardner, 1938 †
- Species Cythara bicolor (Reeve, 1846) accepted as Eucithara bicolor (Reeve, 1846)
- Species Cythara caimitica Maury, 1917 †
- Species Cythara callosa F. Nordsieck, 1977 accepted as Mangelia callosa (F. Nordsieck, 1977)
- Species Cythara cercadica Maury, 1917 † accepted as Lepicythara heptagona (Gabb, 1873)
- Species Cythara chariessa J. A. Gardner, 1938 †
- Species Cythara columbellaeformis Tate & Dennant, 1895 †
- Species Cythara cretacea Stoliczka, 1867 †
- Species Cythara dagama Barnard, 1963 accepted as Gymnobela dagama (Barnard, 1963)
- Species Cythara dautzenbergi Knudsen, 1952 accepted as Gymnobela dautzenbergi (Knudsen, 1952)
- Species Cythara debilis Pease, 1868 accepted as Eucithara debilis (Pease, 1868)
- Species Cythara deliciosa Barnard, 1958 accepted as Pseudorhaphitoma ichthys (Melvill, 1910)
- Species Cythara dubiosa G. Nevill & H. Nevill, 1875 accepted as Eucithara dubiosa (G. Nevill & H. Nevill, 1875)
- Species Cythara duplaris Melvill, 1923 accepted as Eucithara duplaris (Melvill, 1923)
- Species Cythara edithae Melvill & Standen, 1901 accepted as Eucithara edithae (Melvill & Standen, 1901)
- Species Cythara elegans Albrecht & Valk, 1943 † accepted as Mangelia elegans (Albrecht & Valk, 1943) †
- Species Cythara elegantissima Melvill & Standen, 1903 accepted as Paraclathurella gracilenta (Reeve, 1843)
- Species Cythara garrettii Pease, 1860 accepted as Anarithma pamila (Duclos, 1848)
- Species Cythara gibba Guppy, 1896 † accepted as Brachycythara gibba (Guppy, 1896) †
- Species Cythara glaucocreas Barnard, 1963 accepted as Gymnobela glaucocreas (Barnard, 1963)
- Species Cythara gradata G. Nevill & H. Nevill, 1875 accepted as Eucithara gradata (G. Nevill & H. Nevill, 1875)
- Species Cythara guentheri G. B. Sowerby III, 1893 accepted as Eucithara guentheri (G. B. Sowerby III, 1893)
- Species Cythara guppyi Dall, 1896 † accepted as Tenaturris guppyi (Dall, 1896) †
- Species Cythara hofmanni Szőts, 1953 †
- Species Cythara hypercalles Melvill, 1898 accepted as Eucithara fusiformis (Reeve, 1846)
- Species Cythara ima Bartsch, 1915 accepted as Haedropleura ima (Bartsch, 1915)
- Species Cythara interstriata E. A. Smith, 1876 accepted as Eucithara interstriata (E. A. Smith, 1876)
- Species Cythara isseli G. Nevill & H. Nevill, 1875 accepted as Eucithara isseli (G. Nevill & H. Nevill, 1875)
- Species Cythara lota A. Gould, 1860 accepted as Eucithara lota (A. Gould, 1860)
- Species Cythara lyrica (Reeve, 1846) accepted as Gingicithara lyrica (Reeve, 1846)
- Species Cythara maccoyi Petterd, 1879 accepted as Guraleus tasmanicus (Tenison Woods, 1876)
- Species Cythara maltzani Knudsen, 1952 accepted as Haedropleura septangularis (Montagu, 1803)
- Species Cythara merlini (Dautzenberg, 1910) accepted as Mangelia merlini Dautzenberg, 1910
- Species Cythara metria Dall, 1903 accepted as Vitricythara metria (Dall, 1903)
- Species Cythara moronii Venzo & Pelosio, 1964 † accepted as Sorgenfreispira moronii (Venzo & Pelosio, 1964) †
- Species Cythara mucronata Guppy, 1896 accepted as Thelecythara mucronata (Guppy, 1896)
- Species Cythara nevilliana Preston, 1904 accepted as Eucithara nevilliana (Preston, 1904)
- Species Cythara obtusa Guppy, 1896 † accepted as Bactrocythara obtusa (Guppy, 1896) †
- Species Cythara oppenoorthi Oostingh, 1938 † accepted as Eucithara oppenoorthi (Oostingh, 1938) †
- Species Cythara optabilis G. B. Sowerby III, 1907 accepted as Eucithara coronata (Hinds, 1843)
- Species Cythara ossea F. Nordsieck, 1968 accepted as Mangelia ossea (F. Nordsieck, 1968)
- Species Cythara paciniana [sic] accepted as Mangelia paciniana (Calcara, 1839)
- Species Cythara pusilla Pease, 1860 accepted as Eucithara pusilla (Pease, 1860)
- Species Cythara quadrilineata G. B. Sowerby III, 1913 accepted as Citharomangelia quadrilineata (G. B. Sowerby III, 1913)
- Species Cythara ringens G. B. Sowerby III, 1893 accepted as Eucithara ringens (G. B. Sowerby III, 1893)
- Species Cythara sawitrae Beets, 1941 † accepted as Eucithara sawitrae (Beets, 1941) †
- Species Cythara stosiciana (Brusina, 1869) accepted as Mangelia stosiciana Brusina, 1869
- Species Cythara striata Schumacher, 1817
- Species Cythara striatissima G. B. Sowerby III, 1907 accepted as Eucithara striatissima (G. B. Sowerby III, 1907)
- Species Cythara strigata Pease, 1863
- Species Cythara terminula (Dall, 1890) † accepted as Brachycythara terminula (Dall, 1890) †
- Species Cythara thapsiae Oberling, 1970 accepted as Mangelia thapsiae (Oberling, 1970)
- Species Cythara thetis W. H. Turton, 1932
- Species Cythara typhonota Melvill & Standen, 1901 accepted as Eucithara typhonota (Melvill & Standen, 1901)
- Species Cythara unilineata E. A. Smith, 1876 accepted as Eucithara unilineata (E. A. Smith, 1876)
- Species Cythara varia Pease, 1860 accepted as Seminella peasei (E. von Martens & Langkavel, 1871)
- Species Cythara waterhousei E. A. Smith, 1884 accepted as Eucithara coronata (Hinds, 1843)
- Species Cythara zothecula Beets, 1984 †
- 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
- 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 (1 158)
- 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