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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)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 919)
- Order Caenogastropoda incertae sedis (7 677)
- Order Littorinimorpha (17 189)
- Order Neogastropoda (23 738)
- Superfamily Buccinoidea Rafinesque, 1815 (5 253)
- Family Alectrionidae Dall, 1908 accepted as Nassariinae Iredale, 1916 (1835)
- Family Anachidae A. N. Golikov & Starobogatov, 1972 accepted as Atiliinae Cossmann, 1901
- Family Arculariidae Iredale, 1915 accepted as Nassariinae Iredale, 1916 (1835)
- Family Austrosiphonidae Cotton & Godfrey, 1938 (58)
- Family Belomitridae Kantor, Puillandre, Rivasseau & Bouchet, 2012 (32)
- Family Beringiidae A. N. Golikov & Starobogatov, 1975 accepted as Beringiinae A. N. Golikov & Starobogatov, 1975
- Family Buccinanopsidae Galindo, Puillandre, Lozouet & Bouchet, 2016 (7)
- Family Buccinidae Rafinesque, 1815 (512)
- Family Buccinoidea incertae sedis (154)
- Family Buccinulidae H. J. Finlay, 1928 accepted as Tudiclidae Cossmann, 1901
- Family Busyconidae Wade, 1917 (1867) (33)
- Family Cassidulidae Gray, 1854 accepted as Melongenidae Gill, 1871 (1854)
- Family Chauvetiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (61)
- Family Colidae J. E. Gray, 1857 (32)
- Family Colubrariidae Dall, 1904 (162)
- Family Columbellidae Swainson, 1840 (1 201)
- Family Cominellidae J. E. Gray, 1857 (76)
- Family Cyclopsidae Chenu, 1859 accepted as Nassariinae Iredale, 1916 (1835)
- Family Cyrtulidae MacDonald, 1869 accepted as Fusininae Wrigley, 1927
- Family Dolicholatiridae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (43)
- Family Donovaniidae T. L. Casey, 1904 accepted as Chauvetiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021
- Family Echinofulguridae Petuch, 1994 † (15)
- Family Eosiphonidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (72)
- Family Fasciolariidae Gray, 1853 (883)
- Family Fulguridae Stoliczka, 1867 accepted as Busyconinae Wade, 1917 (1867)
- Family Galeodidae Thiele, 1925 accepted as Melongenidae Gill, 1871 (1854)
- Family Heligmotomidae Adegoke, 1977 † accepted as Melongenidae Gill, 1871 (1854)
- Family Latiridae Iredale, 1929 accepted as Fasciolariinae Gray, 1853
- Family Melongenidae Gill, 1871 (1854) (90)
- Family Nassariidae Iredale, 1916 (1835) (1 083)
- Family Neptuneidae W. Stimpson, 1865 accepted as Neptuneinae W. Stimpson, 1865
- Family Peristerniidae Tryon, 1880 accepted as Peristerniinae Tryon, 1880
- Family Pisaniidae J. E. Gray, 1857 (321)
- Genus Ameranna Landau & Vermeij, 2012 (7)
- Genus Aplus De Gregorio, 1885 (31)
- Genus Appisania Thiele, 1929 accepted as Pisania Bivona e Bernardi, 1832
- Genus Bailya M. Smith, 1944 (14)
- Genus Calicantharus B. L. Clark, 1938 accepted as Pusio J. E. Gray, 1833
- Genus Cancellopollia Vermeij & Bouchet, 1998 (3)
- Genus Cantharulus Meek, 1876 † (4)
- Genus Cantharus Röding, 1798 (26)
- Subgenus Cantharus (Clivipollia) Iredale, 1929 accepted as Clivipollia Iredale, 1929
- Subgenus Cantharus (Endopachychilus) Cossmann, 1889 † accepted as Endopachychilus Cossmann, 1889 †
- Subgenus Cantharus (Eocantharus) B. L. Clark, 1938 † accepted as Eocantharus B. L. Clark, 1938 †
- Subgenus Cantharus (Gemophos) Olsson & Harbison, 1953 accepted as Gemophos Olsson & Harbison, 1953
- Subgenus Cantharus (Muricantharus) Olsson, 1971 accepted as Hesperisternia J. A. Gardner, 1944
- Subgenus Cantharus (Pollia) J. E. Gray, 1834 accepted as Pollia J. E. Gray, 1834
- Subgenus Cantharus (Prodotia) Dall, 1924 accepted as Prodotia Dall, 1924
- Subgenus Cantharus (Pseudosalpinx) Olsson & Harbison, 1953 accepted as Calotrophon Hertlein & A. M. Strong, 1951
- Subgenus Cantharus (Tritonidea) Swainson, 1840 accepted as Pollia J. E. Gray, 1834
- Species Cantharus (Tritonidea) albozonatus E. A. Smith, 1890 accepted as Enginella albozonata (E. A. Smith, 1890)
- Species Cantharus (Tritonidea) assimilis (Reeve, 1846) sensu Angas, 1867 accepted as Engina australis (Pease, 1871)
- Species Cantharus (Tritonidea) consanguineus E. A. Smith, 1890 accepted as Claremontiella consanguinea (E. A. Smith, 1890)
- Species Cantharus (Tritonidea) laevis E. A. Smith, 1890 accepted as Cytharomorula grayi (Dall, 1889)
- Species Cantharus (Tritonidea) unicolor Angas, 1867 accepted as Pisania unicolor (Angas, 1867)
- Subgenus Cantharus (Triumphis) J. E. Gray, 1857 accepted as Triumphis J. E. Gray, 1857
- Subgenus Cantharus (Zeapollia) H. J. Finlay, 1926 † represented as Cantharus Röding, 1798
- Species Cantharus acuticingulatus (Suter, 1917) †
- Species Cantharus albozonatus Kosuge, 1983 accepted as Cantharus leucotaeniatus Kosuge, 1985
- Species Cantharus aldermenensis A. W. B. Powell, 1971 accepted as Calagrassor aldermenensis (A. W. B. Powell, 1971)
- Species Cantharus andrei (Basterot, 1825) † accepted as Aplus andrei (Basterot, 1825) †
- Species Cantharus angsananus (K. Martin, 1921) †
- Species Cantharus aquitanensis (Peyrot, 1927) † accepted as Aplus aquitanensis (Peyrot, 1927) †
- Species Cantharus assimilis (Reeve, 1846) accepted as Aplus assimilis (Reeve, 1846)
- Species Cantharus auritulus (Link, 1807) accepted as Gemophos auritulus (Link, 1807)
- Species Cantharus australis (Pease, 1871) accepted as Engina australis (Pease, 1871)
- Species Cantharus berryi J. H. McLean, 1970
- Species Cantharus bolivianus (Souleyet, 1852)
- Species Cantharus brevicaudatus (Tate, 1888) †
- Species Cantharus brevis (Tate, 1888) †
- Species Cantharus brongniartianus (A. d'Orbigny, 1850) † accepted as Editharus roncanus (Brongniart, 1823) †
- Species Cantharus cancellarioides [sic] † accepted as Aplus cancellaroides (Basterot, 1825) †
- Species Cantharus cancellarius (Conrad, 1846) accepted as Solenosteira cancellaria (Conrad, 1846)
- Species Cantharus capitanea (S. S. Berry, 1957) accepted as Solenosteira capitanea (S. S. Berry, 1957)
- Species Cantharus cecillei (R. A. Philippi, 1844)
- Species Cantharus cumberlandiana Gabb, 1860 †
- Species Cantharus curtus (K. Martin, 1931) †
- Species Cantharus delicatus (E. A. Smith, 1899) accepted as Pollia delicata (E. A. Smith, 1899)
- Species Cantharus dorbignyi (Payraudeau, 1826) accepted as Aplus dorbignyi (Payraudeau, 1826)
- Species Cantharus elegans (J. E. Gray, 1833) accepted as Pusio elegans (J. E. Gray, 1833)
- Species Cantharus erosus Röding, 1798 accepted as Coralliophila erosa (Röding, 1798)
- Species Cantharus erythrostoma (Reeve, 1846)
- Species Cantharus erythrostomus [sic] accepted as Cantharus erythrostoma (Reeve, 1846)
- Species Cantharus exanthematus Dall, 1919 accepted as Trachypollia lugubris (C. B. Adams, 1852)
- Species Cantharus extensus (Dunker, 1849)
- Species Cantharus farinosus (A. Gould, 1850) accepted as Sinetectula carduus (Reeve, 1844)
- Species Cantharus filaris Garrett, 1872
- Species Cantharus floridanus (Conrad, 1869) accepted as Calotrophon ostrearum (Conrad, 1846)
- Species Cantharus fortis (P. P. Carpenter, 1866) accepted as Pusio fortis (P. P. Carpenter, 1866) †
- Species Cantharus fragaria (W. Wood, 1828) accepted as Clivipollia fragaria (W. Wood, 1828)
- Species Cantharus fumosus (Dillwyn, 1817) accepted as Pollia fumosa (Dillwyn, 1817)
- Species Cantharus fuscozonatus (Suter, 1908) accepted as Buccinulum fuscozonatum (Suter, 1908)
- Species Cantharus globularis Röding, 1798 accepted as Cantharus tranquebaricus (Gmelin, 1791)
- Species Cantharus insculptus (G. B. Sowerby III, 1900) accepted as Cancellopollia insculpta (G. B. Sowerby III, 1900)
- Species Cantharus iostoma (J. E. Gray, 1833) accepted as Prodotia iostoma (J. E. Gray, 1833)
- Species Cantharus iostomus [sic] accepted as Prodotia iostoma (J. E. Gray, 1833)
- Species Cantharus karinae Nowell-Usticke, 1959 accepted as Hesperisternia karinae (Nowell-Usticke, 1959)
- Species Cantharus kingicola Tate & May, 1900 accepted as Tasmeuthria kingicola (Tate & May, 1900)
- Species Cantharus lanceolatus (Kuroda & T. Habe, 1971) accepted as Engina lanceolata (Kuroda & T. Habe, 1971)
- Species Cantharus lautus (Reeve, 1846) accepted as Hesperisternia lauta (Reeve, 1846)
- Species Cantharus leucotaeniatus Kosuge, 1985
- Species Cantharus lugubris (C. B. Adams, 1852) accepted as Trachypollia lugubris (C. B. Adams, 1852)
- Species Cantharus lulianus (K. Martin, 1884) †
- Species Cantharus massena (Risso, 1826) accepted as Anna massena Risso, 1826 †
- Species Cantharus melanostoma (G. B. Sowerby I, 1825)
- Species Cantharus melanostomus (G. B. Sowerby I, 1825) accepted as Cantharus melanostoma (G. B. Sowerby I, 1825)
- Species Cantharus minutulus Bałuk, 1995 † accepted as Aplus minutulus (Bałuk, 1995) †
- Species Cantharus multangulus (R. A. Philippi, 1848) accepted as Hesperisternia multangulus (R. A. Philippi, 1848)
- Species Cantharus multigranosus Maltzan, 1884 accepted as Muricopsis fusiformis (Gmelin, 1791)
- Species Cantharus njalindungensis (K. Martin, 1921) †
- Species Cantharus obliquecostatus (Tate, 1888) †
- Species Cantharus okinawa MacNeil, 1961 †
- Species Cantharus orientis Fraussen & Vertriest, 2025
- Species Cantharus perplexus Olsson & Harbison, 1953 † accepted as Calotrophon ostrearum (Conrad, 1846)
- Species Cantharus petwayae Poppe, Tagaro & Goto, 2018
- Species Cantharus polygonus (Lamarck, 1803) † accepted as Editharus polygonus (Lamarck, 1803) †
- Species Cantharus porcatus H. Adams & A. Adams, 1864
- Species Cantharus purpuroides (R. M. Johnston, 1880) †
- Species Cantharus rehderi S. S. Berry, 1962 accepted as Hesperisternia elegans (Dall, 1908)
- Species Cantharus rubiginosus (Reeve, 1846) accepted as Pollia rubiginosa (Reeve, 1846)
- Species Cantharus salalahensis T. Cossignani, 2017
- Species Cantharus scaber (Locard, 1891) accepted as Pollia scabra Locard, 1891
- Species Cantharus scacchianus (R. A. Philippi, 1844) accepted as Aplus scacchianus (R. A. Philippi, 1844)
- Species Cantharus seguinensis Garvie, 2013 †
- Species Cantharus septemcostatus Vermeij & Bouchet, 1998
- Species Cantharus shaskyi S. S. Berry, 1959 accepted as Hesperisternia shaskyi (S. S. Berry, 1959)
- Species Cantharus shepstonensis (Tomlin, 1926) accepted as Prodotia shepstonensis (Tomlin, 1926)
- Species Cantharus spica (Melvill & Standen, 1895) accepted as Engina spica Melvill & Standen, 1895
- Species Cantharus spiralis (J. E. Gray, 1839)
- Species Cantharus subcostatus (Krauss, 1848) accepted as Pollia subcostata (Krauss, 1848)
- Species Cantharus subsinuatus Maltzan, 1884 accepted as Trachypollia turricula (Maltzan, 1884)
- Species Cantharus tinctus (Conrad, 1846) accepted as Gemophos tinctus (Conrad, 1846)
- Species Cantharus totomiensis Makiyama, 1927 †
- Species Cantharus tranquebaricus (Gmelin, 1791)
- Species Cantharus tribuloides Noodt, 1819 accepted as Volegalea cochlidium (Linnaeus, 1758)
- Species Cantharus triplicatus Röding, 1798 accepted as Bivetiella cancellata (Linnaeus, 1767)
- Species Cantharus turricula Maltzan, 1884 accepted as Trachypollia turricula (Maltzan, 1884)
- Species Cantharus undosus (Linnaeus, 1758) accepted as Pollia undosa (Linnaeus, 1758)
- Species Cantharus varicosus Tate, 1888 † accepted as Semitriton varicosus (Tate, 1888) †
- Species Cantharus variegatus (Gray, 1839) accepted as Gemophos viverratus (Kiener, 1834)
- Species Cantharus vermeiji Fraussen, 2008
- Species Cantharus vezzarochristofei T. Cossignani, 2017
- Species Cantharus vibex (Broderip, 1833) accepted as Hesperisternia vibex (Broderip, 1833)
- Species Cantharus vicdani Kosuge, 1984 accepted as Pollia sowerbyana vicdani (Kosuge, 1984)
- Species Cantharus viverratus (Kiener, 1834) accepted as Gemophos viverratus (Kiener, 1834)
- Species Cantharus watsonensis Mansfield, 1930 †
- Genus Dianthiphos Watters, 2009 (6)
- Genus Ecmanis Gistel, 1848 (1)
- Genus Editharus Vermeij, 2001 † (10)
- Genus Endopachychilus Cossmann, 1889 † (6)
- Genus Engina J. E. Gray, 1839 (68)
- Genus Enginella Monterosato, 1917 (3)
- Genus Eocantharus B. L. Clark, 1938 † (10)
- Genus Eopreangeria Banerjee & Halder, 2024 † (1)
- Genus Gemophos Olsson & Harbison, 1953 (11)
- Genus Gorgina Preston, 1909 accepted as Engina J. E. Gray, 1839
- Genus Hesperisternia J. A. Gardner, 1944 (13)
- Genus Ickarus Vermeij, 2001 † (1)
- Genus Janiopsis Rovereto, 1899 † (13)
- Genus Jeannea Iredale, 1912 accepted as Pisania (Jeannea) Iredale, 1912
- Genus Lagena Röding, 1798 accepted as Pollia J. E. Gray, 1834
- Genus Micrologus Fraussen & Rosado, 2011 (1)
- Genus Monostiolum Dall, 1904 (12)
- Genus Muricantharus Olsson, 1971 accepted as Hesperisternia J. A. Gardner, 1944
- Genus Pisania Bivona e Bernardi, 1832 (26)
- Genus Pollia J. E. Gray, 1834 (28)
- Genus Proboscidea Möller, 1832 accepted as Ecmanis Gistel, 1848
- Genus Pusio J. E. Gray, 1833 (3)
- Genus Pusiostoma Swainson, 1840 accepted as Engina J. E. Gray, 1839
- Genus Samudra Beets, 1987 † (1)
- Genus Sinetectula Fraussen & Vermeij, 2021 (6)
- Genus Solenosteira Dall, 1890 (9)
- Genus Steye Faber, 2004 (4)
- Genus Sukunaia Cernohorsky, 1966 accepted as Pisania Bivona e Bernardi, 1832
- Genus Tritonidea Swainson, 1840 accepted as Pollia J. E. Gray, 1834
- Genus Tritonidia [sic] accepted as Pollia J. E. Gray, 1834
- Genus Triumphis J. E. Gray, 1857 (3)
- Genus Zeapollia H. J. Finlay, 1926 † accepted as Cantharus Röding, 1798
- Family Prodotiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (27)
- Family Prosiphonidae A. W. B. Powell, 1951 (165)
- Family Pusiostomatidae Iredale, 1940 accepted as Pisaniidae J. E. Gray, 1857
- Family Pyrenidae Suter, 1909 accepted as Atiliinae Cossmann, 1901
- Family Retimohniidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (31)
- Family Tudiclidae Cossmann, 1901 (195)
- Family Volemidae Winckworth, 1945 accepted as Melongenidae Gill, 1871 (1854)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 694)
- 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 † (56)
- 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 (1 253)
- Superfamily Volutoidea Rafinesque, 1815 (3 873)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (308)
- 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