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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)
- 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)
- Subfamily Clavilithinae Vermeij & M. A. Snyder, 2018 † accepted as Clavilithidae Vermeij & M. A. Snyder, 2018 †
- Subfamily Fasciolariinae Gray, 1853 (200)
- Genus Africolaria M. A. Snyder, Vermeij & W. G. Lyons, 2012 (3)
- Genus Aurantilaria M. A. Snyder, Vermeij & W. G. Lyons, 2012 (11)
- Genus Australaria M. A. Snyder, Vermeij & W. G. Lyons, 2012 (12)
- Genus Calkota Squires & Saul, 2003 †
- Genus Cinctura Hollister, 1957 (17)
- Genus Eolatirus Bellardi, 1884 † accepted as Latirus Montfort, 1810
- Genus Fasciolaria Lamarck, 1799 (22)
- Subgenus Fasciolaria (Cinctura) Hollister, 1957 accepted as Cinctura Hollister, 1957
- Subgenus Fasciolaria (Euthriofusus) Cossmann, 1901 † accepted as Euthriofusus Cossmann, 1901 †
- Subgenus Fasciolaria (Fasciolaria) Lamarck, 1799 accepted as Fasciolaria Lamarck, 1799
- Subgenus Fasciolaria (Lirosoma) Conrad, 1862 † accepted as Lirosoma Conrad, 1862 †
- Subgenus Fasciolaria (Mesorhytis) Meek, 1876 † accepted as Mesorhytis Meek, 1876 †
- Subgenus Fasciolaria (Pleuroploca) P. Fischer, 1884 accepted as Pleuroploca P. Fischer, 1884
- Subgenus Fasciolaria (Triplofusus) Olsson & Harbison, 1953 accepted as Triplofusus Olsson & Harbison, 1953
- Species Fasciolaria acutispsira Strebel, 1911 accepted as Triplofusus princeps (G. B. Sowerby I, 1825)
- Species Fasciolaria agatha Simone & Abbate, 2005 accepted as Fusinus agatha (Simone & Abbate, 2005)
- Species Fasciolaria agulhasensis Tomlin, 1932 accepted as Kilburnia scholvieni (Strebel, 1912)
- Species Fasciolaria alfredensis Bartsch, 1915 accepted as Kilburnia scholvieni (Strebel, 1912)
- Species Fasciolaria antonii Récluz, 1844 accepted as Australaria coronata (Lamarck, 1822)
- Species Fasciolaria apolloniensis Cox, 1952 †
- Species Fasciolaria audouini Jonas, 1846 accepted as Pleuroploca audouini (Jonas, 1846)
- Species Fasciolaria aurantiaca Lamarck, 1816 accepted as Aurantilaria aurantiaca (Lamarck, 1816)
- Species Fasciolaria australasia G. Perry, 1811 accepted as Australaria australasia (G. Perry, 1811)
- Species Fasciolaria avena Laube, 1868 † accepted as Pseudotritonium avena (Laube, 1868) †
- Species Fasciolaria badia Krauss, 1848 accepted as Lugubrilaria badia (Krauss, 1848)
- Species Fasciolaria beaufortensis Ward & Blackwelder, 1987 † accepted as Cinctura beaufortensis (Ward & Blackwelder, 1987) †
- Species Fasciolaria bellardii M. Hörnes, 1854 † accepted as Cryptoneolatirus bellardii (M. Hörnes, 1854) †
- Species Fasciolaria biplicata J. De C. Sowerby, 1850 † accepted as Cordieria biplicata (J. De C. Sowerby, 1850) †
- Species Fasciolaria bistriata A. Gould & P. P. Carpenter, 1857 accepted as Fusus buxeus Reeve, 1847
- Species Fasciolaria bittneri Petuch & Berschauer, 2023
- Species Fasciolaria branhamae Rehder & Abbott, 1951 accepted as Cinctura branhamae (Rehder & Abbott, 1951)
- Species Fasciolaria bullisi W. G. Lyons, 1972
- Species Fasciolaria burdigalensis Basterot, 1825 † accepted as Euthriofusus burdigalensis (Basterot, 1825) †
- Species Fasciolaria calusa Petuch, 1994 †
- Species Fasciolaria carminamaris Maury, 1917 † accepted as Aurantilaria carminamaris (Maury, 1917) †
- Species Fasciolaria cingulata Kaunhowen, 1898 †
- Species Fasciolaria cingulifera Lamarck, 1816 accepted as Leucozonia nassa (Gmelin, 1791)
- Species Fasciolaria clandestina Grateloup, 1833 †
- Species Fasciolaria clava Jonas, 1846 accepted as Pleuroploca clava (Jonas, 1846)
- Species Fasciolaria concinna Tate, 1888 † accepted as Pleia concinna (Tate, 1888) †
- Species Fasciolaria coronata Lamarck, 1822 accepted as Australaria coronata (Lamarck, 1822)
- Species Fasciolaria cristata Tate, 1888 † accepted as Pleuroploca cristata (Tate, 1888) †
- Species Fasciolaria crocata R. A. Philippi, 1848 accepted as Pleuroploca princeps (G. B. Sowerby I, 1825)
- Species Fasciolaria cryptoploca Tate, 1888 † accepted as Pleuroploca cryptoploca (Tate, 1888) †
- Species Fasciolaria curvirostris (W. Wood, 1828)
- Species Fasciolaria decipiens Tate, 1888 † accepted as Pleia decipiens (Tate, 1888) †
- Species Fasciolaria delicatissima E. F. García, W. G. Lyons & M. A. Snyder, 2016
- Species Fasciolaria distans Lamarck, 1822 accepted as Cinctura lilium (Fischer von Waldheim, 1807)
- Species Fasciolaria dunkeri Strebel, 1912 accepted as Kilburnia heynemanni (Dunker, 1870)
- Species Fasciolaria exilis Tate, 1888 † accepted as Brocchitas exilis (Tate, 1888) †
- Species Fasciolaria ferruginea Lamarck, 1822 accepted as Filifusus ferrugineus (Lamarck, 1822)
- Species Fasciolaria filamentosa (Röding, 1798) accepted as Filifusus filamentosus (Röding, 1798)
- Species Fasciolaria fimbriata (Brocchi, 1814) † accepted as Tarantinaea fimbriata (Brocchi, 1814) †
- Species Fasciolaria fischeriana Petit de la Saussaye, 1856 accepted as Viridifusus buxeus (Reeve, 1847)
- Species Fasciolaria funiculosa Deshayes, 1835 † accepted as Janiopsis funiculosa (Deshayes, 1835) †
- Species Fasciolaria fusiformis Kiener, 1840 accepted as Australaria fusiformis (Kiener, 1840)
- Species Fasciolaria fusiformis Gábor, 1936 †
- Species Fasciolaria fusilla Tate, 1889 † accepted as Australaria fusilla (Tate, 1889) †
- Species Fasciolaria fusoidea Michelotti, 1847 † accepted as Latirus fusoideus (Michelotti, 1847) †
- Species Fasciolaria fusoides Grateloup, 1833 †
- Species Fasciolaria fusus R. A. Philippi, 1844 †
- Species Fasciolaria gabbi Dickerson, 1917 †
- Species Fasciolaria gatliffi (Chapman, 1922) accepted as Liniaxis gatliffi (Chapman, 1922) †
- Species Fasciolaria gigantea Kiener, 1840 accepted as Triplofusus giganteus (Kiener, 1840)
- Species Fasciolaria glabra Dunker, 1882 accepted as Filifusus glaber (Dunker, 1882)
- Species Fasciolaria gorgasiana A. P. Brown & Pilsbry, 1913 † accepted as Granolaria gorgasiana (A. P. Brown & Pilsbry, 1913) †
- Species Fasciolaria gracilis Zekeli, 1852 †
- Species Fasciolaria granosa Broderip, 1832 accepted as Granolaria salmo (W. Wood, 1828)
- Species Fasciolaria guyanensis W. G. Lyons & M. A. Snyder, 2016
- Species Fasciolaria haleyi Berschauer & Petuch, 2023
- Species Fasciolaria hexagona d'Archiac & Haime, 1854 †
- Species Fasciolaria heynemanni Dunker, 1870 accepted as Kilburnia heynemanni (Dunker, 1870)
- Species Fasciolaria hoernesii G. Seguenza, 1875 † accepted as Tarantinaea hoernesii (G. Seguenza, 1875) †
- Species Fasciolaria holcophorus Barnard, 1959 accepted as Metzgeria holcophorus (Barnard, 1959)
- Species Fasciolaria hollisteri Weisbord, 1962 †
- Species Fasciolaria hunteria (G. Perry, 1811) accepted as Cinctura hunteria (Perry, 1811)
- Species Fasciolaria iizukai Yokoyama, 1928 † accepted as Afer cumingii (Reeve, 1848)
- Species Fasciolaria inermis Jonas, 1846 accepted as Filifusus inermis (Jonas, 1846)
- Species Fasciolaria insularis D. Fernández, 1977 accepted as Cavineptunea insularis (D. Fernández, 1977)
- Species Fasciolaria intermedia G. B. Sowerby I, 1850 † accepted as Fasciolaria semistriata G. B. Sowerby I, 1850 †
- Species Fasciolaria io Gabb, 1864 † accepted as Nekewis io (Gabb, 1864) †
- Species Fasciolaria ixchel Petuch & Berschauer, 2024
- Species Fasciolaria jacksonensis Aldrich, 1885 †
- Species Fasciolaria jouanneti Mayer, 1864 † accepted as Aurantilaria michelotiana (Grateloup, 1845) †
- Species Fasciolaria karreri Laube, 1868 † accepted as Pseudotritonium venustum (Münster, 1841) †
- Species Fasciolaria laevis Kaunhowen, 1898 †
- Species Fasciolaria leganyii Gábor, 1936 †
- Species Fasciolaria leura Woodring, 1928 †
- Species Fasciolaria ligata Mighels & C. B. Adams, 1842 accepted as Ptychatractus ligatus (Mighels & C. B. Adams, 1842)
- Species Fasciolaria lignaria (Linnaeus, 1758) accepted as Tarantinaea lignaria (Linnaeus, 1758)
- Species Fasciolaria lilium Fischer von Waldheim, 1807 accepted as Cinctura lilium (Fischer von Waldheim, 1807)
- Species Fasciolaria lischkeana Dunker, 1863 accepted as Pleuroploca lischkeana (Dunker, 1863)
- Species Fasciolaria lugubris A. Adams & Reeve, 1847 accepted as Lugubrilaria lugubris (A. Adams & Reeve, 1847)
- Species Fasciolaria macdonaldi Olsson, 1922 † accepted as Aurantilaria macdonaldi (Olsson, 1922) †
- Species Fasciolaria magna (Anton, 1838)
- Species Fasciolaria mareana Weisbord, 1962 †
- Species Fasciolaria michelotiana Grateloup, 1845 † accepted as Aurantilaria michelotiana (Grateloup, 1845) †
- Species Fasciolaria monocingulata Dall, 1890 †
- Species Fasciolaria moravica R. Hoernes & Auinger, 1890 † accepted as Turrilatirus moravicus (R. Hoernes & Auinger, 1890) †
- Species Fasciolaria mutabilis Conrad, 1834 † accepted as Volutifusus mutabilis (Conrad, 1834) †
- Species Fasciolaria nassaeformis Grateloup, 1833 †
- Species Fasciolaria nitida Zekeli, 1852 †
- Species Fasciolaria nodifera Dujardin, 1837 †
- Species Fasciolaria okeechobensis H. I. Tucker & D. Wilson, 1932 †
- Species Fasciolaria olssoni F. M. Anderson, 1929 † accepted as Granolaria olssoni (F. M. Anderson, 1929) †
- Species Fasciolaria ornata A. d'Orbigny, 1852 † accepted as Eurolatirus ornatus (A. d'Orbigny, 1852) †
- Species Fasciolaria papillosa G. B. Sowerby I, 1825
- Species Fasciolaria pecchiolii O. Semper, 1861 †
- Species Fasciolaria pergracilis Aldrich, 1886 accepted as Exilia pergracilis (Aldrich, 1886) †
- Species Fasciolaria persica Reeve, 1847 accepted as Pleuroploca clava (Jonas, 1846)
- Species Fasciolaria petuchi Crabos & Queiroz, 2023
- Species Fasciolaria pleurotomoides R. Hoernes & Auinger, 1890 † accepted as Dulaiania pleurotomoides (R. Hoernes & Auinger, 1890) †
- Species Fasciolaria plummeri Gardner, 1933 † accepted as Pleuroploca plummeri (Gardner, 1935) †
- Species Fasciolaria polonica Pusch, 1837 † accepted as Euthria puschii (Andrzejowski, 1830) †
- Species Fasciolaria polygonata Grateloup, 1833 †
- Species Fasciolaria ponderosa Jonas, 1850 accepted as Pleuroploca ponderosa (Jonas, 1850)
- Species Fasciolaria porphyrostoma Reeve, 1847 accepted as Afer porphyrostoma (Reeve, 1847)
- Species Fasciolaria prima A. d'Orbigny, 1850 † accepted as Ornopsis prima (A. d'Orbigny, 1850) †
- Species Fasciolaria princeps G. B. Sowerby I, 1825 accepted as Triplofusus princeps (G. B. Sowerby I, 1825)
- Species Fasciolaria punctifera Grateloup, 1833 †
- Species Fasciolaria purpurea Jonas, 1849 accepted as Pleuroploca purpurea (Jonas, 1849)
- Species Fasciolaria pusilla R. A. Philippi, 1844 † accepted as Pseudobabylonella pusilla (R. A. Philippi, 1844) †
- Species Fasciolaria pyrulaeformis R. Hoernes & Auinger, 1890 † accepted as Aurantilaria pyrulaeformis (R. Hoernes & Auinger, 1890) †
- Species Fasciolaria pyrulina Grateloup, 1833 †
- Species Fasciolaria raynevali Mayer, 1864 †
- Species Fasciolaria recticauda Fuchs, 1877 † accepted as Neolatirus recticauda (Fuchs, 1877) †
- Species Fasciolaria reevei Jonas, 1850 accepted as Triplofusus giganteus (Kiener, 1840)
- Species Fasciolaria rhomboidea W. B. Rogers & H. D. Rogers, 1839 † accepted as Cinctura rhomboidea (W. B. Rogers & H. D. Rogers, 1839) †
- Species Fasciolaria rugata Tate, 1888 † accepted as Pleuroploca rugata (Tate, 1888) †
- Species Fasciolaria rugosa Briart & Cornet, 1868 † accepted as Fusinus rugosus (Briart & Cornet, 1868) †
- Species Fasciolaria rutila R. B. Watson, 1882 accepted as Africolaria rutila (R. B. Watson, 1882)
- Species Fasciolaria saffordi Gabb, 1860 †
- Species Fasciolaria salmo (W. Wood, 1828) accepted as Granolaria salmo (W. Wood, 1828)
- Species Fasciolaria savignyi Tapparone Canefri, 1875 accepted as Tarantinaea lignaria (Linnaeus, 1758)
- Species Fasciolaria scalarina Heilprin, 1887 †
- Species Fasciolaria scholvieni Strebel, 1912 accepted as Kilburnia scholvieni (Strebel, 1912)
- Species Fasciolaria seminole Petuch, 1994 †
- Species Fasciolaria semistriata G. B. Sowerby I, 1850 †
- Species Fasciolaria sparrowi Emmons, 1858 †
- Species Fasciolaria spirorbula Menke, 1829 accepted as Latirus spirorbulus (Menke, 1829)
- Species Fasciolaria strebeli Fulton, 1930 accepted as Kilburnia heynemanni (Dunker, 1870)
- Species Fasciolaria striata Kaunhowen, 1898 †
- Species Fasciolaria subalveatum (Conrad, 1849) † accepted as Triton subalveatum Conrad, 1849 †
- Species Fasciolaria sulcata (Anton, 1838)
- Species Fasciolaria sulcata A. Lesson, 1842
- Species Fasciolaria supracretacea A. d'Orbigny, 1850 † accepted as Latirulus supracretaceus (A. d'Orbigny, 1850) †
- Species Fasciolaria suryai Beets, 1941 †
- Species Fasciolaria tarbelliana Grateloup, 1845 † accepted as Aurantilaria tarbelliana (Grateloup, 1845) †
- Species Fasciolaria tarentina Lamarck, 1822 accepted as Tarantinaea lignaria (Linnaeus, 1758)
- Species Fasciolaria taurinia Michelotti, 1847 †
- Species Fasciolaria tenisoni Tenison Woods, 1879 † accepted as Pleia tenisoni (Tenison Woods, 1879) †
- Species Fasciolaria tephrina P. Souza, 2002
- Species Fasciolaria textilis Guppy, 1873 †
- Species Fasciolaria thersites (Reeve, 1847) accepted as Africolaria thersites (Reeve, 1847)
- Species Fasciolaria trapezium (Linnaeus, 1758) accepted as Pleuroploca trapezium (Linnaeus, 1758)
- Species Fasciolaria trunculus Handmann, 1882 †
- Species Fasciolaria tuberculata (Anton, 1838) accepted as Turbinella tuberculata Anton, 1838
- Species Fasciolaria tuberculata Giebel, 1861 † accepted as Turehua tuberculata (Giebel, 1861) †
- Species Fasciolaria tulipa (Linnaeus, 1758)
- Subspecies Fasciolaria tulipa hollisteri Weisbord, 1962 accepted as Fasciolaria hollisteri Weisbord, 1962 †
- Species Fasciolaria uniplicata (Lamarck, 1803) † accepted as Cosmolithes uniplicatus (Lamarck, 1803) †
- Species Fasciolaria valenciennesii Kiener, 1840 accepted as Granolaria valenciennesii (Kiener, 1840)
- Species Fasciolaria valenciennesii Grateloup, 1845 † accepted as Eurolatirus ornatus (A. d'Orbigny, 1852) †
- Species Fasciolaria walleri Ladd, 1976 † accepted as Euthria walleri (Ladd, 1976)
- Species Fasciolaria washingtoniana C. E. Weaver, 1912 † accepted as Nekewis washingtoniana (C. E. Weaver, 1912) †
- Species Fasciolaria wattersae Kilburn, 1974 accepted as Africolaria wattersae (Kilburn, 1974)
- Species Fasciolaria woodii Gabb, 1860 †
- Genus Filifusus M. A. Snyder, Vermeij & W. G. Lyons, 2012 (6)
- Genus Fusilaria M. A. Snyder, 2013 (1)
- Genus Granolaria M. A. Snyder, Vermeij & W. G. Lyons, 2012 (6)
- Genus Ioeranea Rafinesque, 1815 accepted as Fasciolaria Lamarck, 1799
- Genus Kilburnia M. A. Snyder, Vermeij & W. G. Lyons, 2012 (3)
- Genus Lathira [sic] accepted as Latirus Montfort, 1810
- Genus Lathyropsis Oostingh, 1939 † (1)
- Genus Lathyrus [sic] accepted as Latirus Montfort, 1810
- Genus Latirus Montfort, 1810 (66)
- Genus Latyrus P. P. Carpenter, 1857 accepted as Latirus Montfort, 1810
- Genus Liochlamys Dall, 1889 † (1)
- Genus Lugubrilaria M. A. Snyder, Vermeij & W. G. Lyons, 2012 (3)
- Genus Micasarcina Squires & Saul, 2003 †
- Genus Mylecoma Squires & Saul, 2003 †
- Genus Odontofusus Whitfield, 1892 †
- Genus Perse B. L. Clark, 1918 † (2)
- Genus Piestochilus Meek, 1864 †
- Genus Plectocion R. B. Stewart, 1927 †
- Genus Plesiolatirus Bellardi, 1884 † accepted as Latirus Montfort, 1810
- Genus Pleuroploca P. Fischer, 1884 (10)
- Genus Plicatella Swainson, 1837 accepted as Polygona Schumacher, 1817
- Genus Pliculofusus M. A. Snyder, Vermeij & W. G. Lyons, 2012 †
- Genus Polygona Schumacher, 1817 (31)
- Genus Skyles Saul & Popenoe, 1993 † (1)
- Genus Terebraspira Conrad, 1862 †
- Genus Triplofusus Olsson & Harbison, 1953 (2)
- Genus Whitneyella R. B. Stewart, 1927 † accepted as Perse B. L. Clark, 1918 † (1)
- Genus Woodsella Wade, 1926 † (1)
- Subfamily Fusininae Wrigley, 1927 (441)
- Subfamily Peristerniinae Tryon, 1880 (240)
- Genus Paleosephaea Wade, 1926 † (1)
- Genus Pseudolathyrus [sic] accepted as Pseudolatirus Bellardi, 1884 †
- Genus Rocalaria del Río, 2012 † (1)
- 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)
- 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 (8 671)
- 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)
- 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