Between brackets is the number of accepted species

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- Mollusca (132 754)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 992)
- Class Caudofoveata (143)
- Class Cephalopoda (1 832)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 679)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 623)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 917)
- Order Caenogastropoda incertae sedis (7 675)
- Order Littorinimorpha (17 171)
- 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)
- 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)
- Family Columbariidae Tomlin, 1928 (105)
- Family Costellariidae MacDonald, 1860 (808)
- Subfamily Pusiinae Habe, 1961 accepted as Costellariidae MacDonald, 1860
- Genus Alisimitra Fedosov, Herrmann & Bouchet, 2017 (6)
- Genus Antithala Harzhauser & Landau, 2021 † (4)
- Genus Arenimitra Iredale, 1929 accepted as Vexillum Röding, 1798
- Genus Atlantilux S.-I Huang, 2015 (7)
- Genus Austromitra H. J. Finlay, 1926 (84)
- Species Austromitra acherontis B. A. Marshall & Marrow, 2021
- Species Austromitra aikeni Lussi, 2015
- Species Austromitra ambulacrum (Marwick, 1926) †
- Species Austromitra analogica (Reeve, 1845)
- Species Austromitra angulata (Suter, 1908)
- Species Austromitra angusticostata Ludbrook, 1941 †
- Species Austromitra apicitincta (Verco, 1896)
- Species Austromitra arnoldi (Verco, 1909)
- Species Austromitra bathyraphe (G. B. Sowerby III, 1900)
- Species Austromitra bellapicta (Verco, 1909)
- Species Austromitra benschneideri Marrow, 2024
- Species Austromitra brunneacincta A. W. B. Powell, 1952 accepted as Austromitra planata (F. W. Hutton, 1885)
- Species Austromitra brunneopunctata Herrmann, R. Salisbury & J. C. Martin, 2019
- Species Austromitra bucklandi Gabriel, 1962 accepted as Austromitra tasmanica (Tenison Woods, 1876)
- Species Austromitra burchi B. A. Marshall & Marrow, 2021
- Species Austromitra canaliculata (G. B. Sowerby III, 1900)
- Species Austromitra capensis (Reeve, 1845)
- Species Austromitra caudata Marwick, 1931 † accepted as Costellaria caudata (Marwick, 1931) †
- Species Austromitra cernohorskyi H. Turner, 2008
- Species Austromitra cinnamomea (A. Adams, 1855)
- Species Austromitra citharelloides (Tate, 1889) †
- Species Austromitra crayssaci Herrmann, R. Salisbury & J. C. Martin, 2019
- Species Austromitra crosbyi B. A. Marshall & Marrow, 2021
- Species Austromitra decresca Simone & C. Cunha, 2012
- Species Austromitra diamantina Marrow, 2023
- Species Austromitra dissimilis (A. W. B. Powell, 1937)
- Species Austromitra distincta (Thiele, 1925)
- Species Austromitra doningtonensis Marrow, 2023
- Species Austromitra erecta A. W. B. Powell, 1934
- Species Austromitra euzonata (G. B. Sowerby III, 1900)
- Species Austromitra fallax B. A. Marshall & Marrow, 2021
- Species Austromitra fedosovi B. A. Marshall & Marrow, 2021
- Species Austromitra festiva B. A. Marshall & Marrow, 2021
- Species Austromitra gradusspira Lussi, 2015
- Species Austromitra grovei Marrow & R. Salisbury, 2019
- Species Austromitra hayesi H. Turner, 1999
- Species Austromitra hewittae Marrow, 2023
- Species Austromitra ima (Bartsch, 1915) accepted as Austromitra capensis (Reeve, 1845)
- Species Austromitra jaffaensis (Cotton & Godfrey, 1932)
- Species Austromitra koumacensis Herrmann, R. Salisbury & J. C. Martin, 2019
- Species Austromitra kowieensis (G. B. Sowerby III, 1901)
- Species Austromitra lacertosa (Cernohorsky, 1970) †
- Species Austromitra lamellata B. A. Marshall & Marrow, 2021
- Species Austromitra lawsi H. J. Finlay, 1930
- Species Austromitra leeuwinensis Marrow, 2023
- Species Austromitra legrandi (Tenison Woods, 1876)
- Species Austromitra lincolnensis (Angas, 1878)
- Species Austromitra lirata B. A. Marshall & Marrow, 2021
- Species Austromitra macra (H. J. Finlay, 1927) †
- Species Austromitra maculosa H. Turner & Simone, 1998
- Species Austromitra mawsoni Ludbrook, 1958 † accepted as Austromitra angusticostata Ludbrook, 1941 †
- Species Austromitra minutenodosa Cernohorsky, 1980
- Species Austromitra morrisoni Marrow, 2024
- Species Austromitra mozambiquensis R. Salisbury, Gori & Rosado, 2024
- Species Austromitra multiplicata Ludbrook, 1958 †
- Species Austromitra occidua B. A. Marshall & Marrow, 2021
- Species Austromitra opima B. A. Marshall & Marrow, 2021
- Species Austromitra ovata B. A. Marshall & Marrow, 2021
- Species Austromitra pauciplicata Ludbrook, 1958 † accepted as Austromitra angusticostata Ludbrook, 1941 †
- Species Austromitra planata (F. W. Hutton, 1885)
- Species Austromitra planatella H. J. Finlay, 1930 accepted as Austromitra planata (F. W. Hutton, 1885)
- Species Austromitra plicifera Marwick, 1928 † accepted as Peculator pliciferus (Marwick, 1928) †
- Species Austromitra ponderi B. A. Marshall & Marrow, 2021
- Species Austromitra pumila (Tate, 1889) †
- Species Austromitra quadrilineata Marrow, 2023
- Species Austromitra quenelli C. A. Fleming, 1943 †
- Species Austromitra ralphi (Cossmann, 1900) †
- Species Austromitra regalis B. A. Marshall & Marrow, 2021
- Species Austromitra retrocurvata (Verco, 1909)
- Species Austromitra rhodarion (Kilburn, 1972)
- Species Austromitra rosenbergi R. Salisbury, 2015
- Species Austromitra rottnestensis Marrow, 2023
- Species Austromitra rubiginosa (F. W. Hutton, 1873)
- Species Austromitra rubiradix H. J. Finlay, 1926 accepted as Austromitra rubiginosa (F. W. Hutton, 1873)
- Species Austromitra sansibarica (Thiele, 1925)
- Species Austromitra scalariformis (Tenison Woods, 1876) accepted as Austromitra schomburgki (Angas, 1878)
- Species Austromitra schomburgki (Angas, 1878)
- Species Austromitra semirosea Herrmann, R. Salisbury & J. C. Martin, 2019
- Species Austromitra sordida (Tate, 1889) †
- Species Austromitra stewarti B. A. Marshall & Marrow, 2021
- Species Austromitra tangaroa B. A. Marshall & Marrow, 2021
- Species Austromitra tasmanica (Tenison Woods, 1876)
- Species Austromitra torosa B. A. Marshall & Marrow, 2021
- Species Austromitra translucida Marrow, 2023
- Species Austromitra tricordata Beu, 1970 † accepted as Egestas tricordata (Beu, 1970) †
- Species Austromitra tui B. A. Marshall & Marrow, 2021
- Species Austromitra valarieae Lussi, 2015
- Species Austromitra vercoi Marrow, 2023
- Species Austromitra viridimuscus Marrow & R. Salisbury, 2019
- Species Austromitra volucra (Hedley, 1915)
- Species Austromitra waltoni B. A. Marshall & Marrow, 2021
- Species Austromitra westralis Marrow, 2023
- Species Austromitra whissoni Marrow, 2023
- Species Austromitra willcoxae Herrmann, R. Salisbury & J. C. Martin, 2019
- Species Austromitra zafra A. W. B. Powell, 1952
- Genus Balcomitra H. J. Finlay, 1927 † accepted as Austromitra H. J. Finlay, 1926
- Genus Bellardithala Harzhauser & Landau, 2021 † (17)
- Genus Callithea Swainson, 1840 accepted as Vexillum Röding, 1798
- Genus Ceratoxancus Kuroda, 1952 (7)
- Genus Costapex Fedosov, Herrmann & Bouchet, 2017 (7)
- Genus Costellaria Swainson, 1840 accepted as Vexillum Röding, 1798 (2)
- Genus Cyomesus Quinn, 1981 accepted as Latiromitra Locard, 1897
- Genus Ebenomitra Monterosato, 1917 represented as Pusia (Ebenomitra) Monterosato, 1917 (5)
- Genus Fedosovia Harzhauser & Landau, 2021 † (3)
- Genus Idiochila Pilsbry, 1921
- Genus Latiromitra Locard, 1897 (13)
- Genus Micromitra Bellardi, 1888 † accepted as Bellardithala Harzhauser & Landau, 2021 †
- Genus Mitromica S. S. Berry, 1958 (21)
- Genus Mitropifex Iredale, 1929 accepted as Vexillum Röding, 1798
- Genus Nodicostellaria Petuch, 1987 (5)
- Genus Okinawavoluta H. Noda, 1980 accepted as Latiromitra Locard, 1897
- Genus Orphanopusia Fedosov, Herrmann & Bouchet, 2017 (2)
- Genus Protoelongata Herrmann, Stossier & R. Salisbury, 2014 (7)
- Genus Pulchritima Iredale, 1929 accepted as Vexillum Röding, 1798
- Genus Pusia Swainson, 1840 (61)
- Genus Pusiola Monterosato, 1912 accepted as Pusia (Ebenomitra) Monterosato, 1917
- Genus Pusiolina Cossmann, 1921 accepted as Pusia (Ebenomitra) Monterosato, 1917
- Genus Suluspira Fedosov, Herrmann & Bouchet, 2017 (2)
- Genus Thala H. Adams & A. Adams, 1853 (37)
- Genus Thaluta Rosenberg & P. Callomon, 2004 (2)
- Genus Tiara Swainson, 1831 accepted as Vexillum Röding, 1798
- Genus Tongsuapusia S.-I Huang, 2015 accepted as Tosapusia M. Azuma, 1965
- Genus Tosapusia M. Azuma, 1965 (15)
- Genus Turricostellaria Petuch, 1987 (6)
- Genus Turricula O. Fabricius, 1823 accepted as Vexillum (Vexillum) Röding, 1798 (1)
- Genus Turricula H. Adams & A. Adams, 1853 accepted as Vexillum Röding, 1798 (1)
- Genus Turriplicifer Fedosov, Marrow, Herrmann & Bouchet, 2017 (5)
- Genus Uromitra Bellardi, 1887 accepted as Vexillum (Costellaria) Swainson, 1840 (2)
- Genus Vexillena Fedosov, Herrmann & Bouchet, 2017 accepted as Pusia (Vexillena) Fedosov, Herrmann & Bouchet, 2017
- Genus Vexillum Röding, 1798 (486)
- Genus Visaya Poppe, E. Guillot de Suduiraut & Tagaro, 2006 accepted as Suluspira Fedosov, Herrmann & Bouchet, 2017
- Genus Vulpecula Blainville, 1824 accepted as Vexillum Röding, 1798
- Genus Zierliana Gray, 1847 accepted as Vexillum Röding, 1798
- Family Cynodontidae MacDonald, 1860 accepted as Vasidae H. Adams & A. Adams, 1853
- Family Graphidulidae Stephenson, 1941 † accepted as Ptychatractidae W. Stimpson, 1865
- Family Ptychatractidae W. Stimpson, 1865 (71)
- Family Turbinellidae Swainson, 1835 (28)
- Family Vasidae H. Adams & A. Adams, 1853 (80)
- Family Vexillidae Thiele, 1929 accepted as Costellariidae MacDonald, 1860
- Family Volutomitridae J. E. Gray, 1854 (160)
- Family Xancidae Pilsbry, 1922 accepted as Turbinellidae Swainson, 1835
- Superfamily Volutoidea Rafinesque, 1815 (3 873)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 154)
- 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