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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)
- Subfamily Fusininae Wrigley, 1927 (441)
- Subfamily Peristerniinae Tryon, 1880 (240)
- Genus Aptycholathyrus Cossmann & Pissarro, 1905 †
- Genus Ascolatirus Bellardi, 1884 accepted as Peristernia Mörch, 1852
- Genus Benimakia T. Habe, 1958 (16)
- Genus Brocchitas H. J. Finlay, 1927 † (1)
- Genus Bulbifusus Conrad, 1865 † accepted as Mazzalina Conrad, 1860 †
- Genus Bullockus W. G. Lyons & M. A. Snyder, 2008 (5)
- Genus Chasca [sic] accepted as Chascax R. B. Watson, 1873
- Genus Chascax R. B. Watson, 1873 accepted as Hemipolygona Rovereto, 1899
- Genus Crassibougia Stahlschmidt & Fraussen, 2012 (2)
- Genus Cryptoneolatirus Harzhauser, Landau & Vermeij, 2024 † (1)
- Genus Dennantia Tate, 1888 † (13)
- Genus Dentifusus Vermeij & Rosenberg, 2003 (1)
- Genus Dertonia Bellardi, 1884 † (1)
- Genus Eurolatirus Harzhauser, Landau & Vermeij, 2024 † (1)
- Genus Exilifusus Conrad, 1865 † (3)
- Genus Fractolatirus Iredale, 1936 (2)
- Genus Fredenia Cadée & A. W. Janssen, 1994 † accepted as Latirulus Cossmann, 1889
- Genus Fusolatirus Kuroda & Habe, 1971 (17)
- Genus Hemipolygona Rovereto, 1899 (13)
- Genus Lagena Schumacher, 1817 accepted as Latirolagena G. F. Harris, 1897
- Genus Lamellilatirus W. G. Lyons & M. A. Snyder, 2008 (7)
- Genus Lathyrulus Cossmann, 1901 † accepted as Latirulus Cossmann, 1889
- Genus Latirolagena G. F. Harris, 1897 (3)
- Genus Latirulus Cossmann, 1889 (21)
- Genus Leucozonia J. E. Gray, 1847 (8)
- Genus Lightbournus W. G. Lyons & M. A. Snyder, 2008 (2)
- Genus Mazzalina Conrad, 1860 † (2)
- Genus Neolatirus Bellardi, 1884 † (1)
- Genus Nodolatirus Bouchet & M. A. Snyder, 2013 (4)
- Genus Nodopelagia Hedley, 1915 (1)
- Genus Opeatostoma S. S. Berry, 1958 (1)
- Genus Peristernia Mörch, 1852 (70)
- Species Peristernia acaulis (K. Martin, 1895) †
- Species Peristernia actinostephes Tate, 1888 † accepted as Microcolus actinostephes (Tate, 1888) †
- Species Peristernia aethiops Macpherson, 1959
- Species Peristernia affinis Tate, 1888 † accepted as Microcolus affinis (Tate, 1888) †
- Species Peristernia aldingensis Tate, 1888 † accepted as Dennantia aldingensis (Tate, 1888) †
- Species Peristernia allioni (Michelotti, 1847) †
- Species Peristernia altifrons Tate, 1888 †
- Species Peristernia angsanana (K. Martin, 1921) †
- Species Peristernia angulata (G. B. Sowerby III, 1888)
- Species Peristernia annulata Melvill, 1891
- Species Peristernia apicilirata Tate, 1888 † accepted as Microcolus apiciliratus (Tate, 1888) †
- Species Peristernia approximans Tate, 1888 † accepted as Bedeva approximans (Tate, 1888) †
- Species Peristernia aureocincta (G. B. Sowerby III, 1875) accepted as Latirus aureocinctus G. B. Sowerby III, 1875
- Species Peristernia australiensis (Reeve, 1847)
- Species Peristernia bandongensis (K. Martin, 1884) †
- Species Peristernia beberiana (K. Martin, 1921) †
- Species Peristernia bicolor (Kobelt, 1874)
- Species Peristernia bonasia (E. von Martens, 1880) accepted as Engina bonasia (E. von Martens, 1880)
- Species Peristernia boutetorum Tröndlé, 2017
- Species Peristernia brazieri Angas, 1877 accepted as Nodopelagia brazieri (Angas, 1877)
- Species Peristernia californica (A. Adams, 1853) accepted as Leucozonia nassa (Gmelin, 1791)
- Species Peristernia canthariformis Melvill, 1891
- Species Peristernia carlajoostae Lussi, 2014
- Species Peristernia carolinae (Kiener, 1840) accepted as Clivipollia fragaria (W. Wood, 1828)
- Species Peristernia carotiana (Tapparone Canefri, 1881)
- Species Peristernia castanoleuca Tapparone Canefri, 1879
- Species Peristernia chlorostoma (G. B. Sowerby I, 1825)
- Species Peristernia clathrata (Kiener, 1840)
- Species Peristernia columbarium (Gmelin, 1791)
- Species Peristernia corallina Melvill & Standen, 1903 accepted as Orania corallina (Melvill & Standen, 1903)
- Species Peristernia cremnochione Melvill, 1891
- Species Peristernia crocea (J. E. Gray, 1839)
- Species Peristernia decorata (A. Adams, 1855)
- Species Peristernia deshayesii (Kobelt, 1876) accepted as Peristernia nassatula (Lamarck, 1822)
- Species Peristernia despecta (A. Adams, 1855)
- Species Peristernia elegans (Dunker, 1844) accepted as Clivipollia pulchra (Reeve, 1846)
- Species Peristernia eniwetokensis Ladd, 1977 †
- Species Peristernia fastigium (Reeve, 1847) accepted as Benimakia fastigium (Reeve, 1847)
- Species Peristernia fenestrata A. Gould, 1860 accepted as Vaughtia fenestrata (A. Gould, 1860)
- Species Peristernia filicata (Conrad, 1843) †
- Species Peristernia forskalii (Tapparone Canefri, 1875)
- Species Peristernia fragaria (W. Wood, 1828) accepted as Clivipollia fragaria (W. Wood, 1828)
- Species Peristernia funiculata (Tapparone Canefri, 1882)
- Species Peristernia fuscotincta (G. B. Sowerby III, 1886)
- Species Peristernia gemmata (Reeve, 1847)
- Species Peristernia granulosa (Pease, 1868)
- Species Peristernia hilaris Melvill, 1891
- Species Peristernia igorshlegeli Bozzetti, 2020
- Species Peristernia incarnata (Deshayes, 1833) sensu Kiener, 1840 accepted as Peristernia reincarnata M. A. Snyder, 2000
- Species Peristernia incerta Schepman, 1911
- Species Peristernia inculta A. Gould, 1860 accepted as Leucozonia nassa (Gmelin, 1791)
- Species Peristernia iniuensis Melvill, 1891
- Species Peristernia interlineata Tate, 1888 † accepted as Streptopelma interlineata (Tate, 1888) †
- Species Peristernia jeaniae (Melvill, 1911)
- Species Peristernia jogjacartensis (K. Martin, 1914) †
- Species Peristernia junghuhni (K. Martin, 1879) †
- Species Peristernia kobeltiana Tapparone Canefri, 1879 accepted as Benimakia rubens (Lamarck, 1822)
- Species Peristernia ktolemandoensis (K. Martin, 1933)
- Species Peristernia leucothea Melvill, 1891 accepted as Peristernia forskalii leucothea Melvill, 1891
- Species Peristernia lintea Tate, 1888 † accepted as Streptopelma lintea (Tate, 1888) †
- Species Peristernia lirata (Pease, 1868)
- Species Peristernia loebbeckei (Kobelt, 1876)
- Species Peristernia losariensis (K. Martin, 1895) †
- Species Peristernia luculenta H. Adams & A. Adams, 1864 accepted as Godfreyena luculenta (H. Adams & A. Adams, 1864)
- Species Peristernia luteola Tapparone Canefri, 1878
- Species Peristernia malvastoma Lussi, 2014
- Species Peristernia mannophora Melvill, 1891 accepted as Latirus mannophorus (Melvill, 1891)
- Species Peristernia marquesana (A. Adams, 1855)
- Species Peristernia martini Beets, 1941 †
- Species Peristernia melanorhynca (Tapparone Canefri, 1882)
- Species Peristernia merangiana (K. Martin, 1921) †
- Species Peristernia mirabilis (Bozzetti, 2018)
- Species Peristernia moltenii Bozzetti, 2014
- Species Peristernia morundiana Tate, 1888 † accepted as Australaria morundiana (Tate, 1888) †
- Species Peristernia murrayana Tate, 1888 † accepted as Dennantia murrayana (Tate, 1888) †
- Species Peristernia nassatula (Lamarck, 1822)
- Species Peristernia neglecta (A. Adams, 1855)
- Species Peristernia nigritella (Tapparone Canefri, 1882)
- Species Peristernia nodulosa A. Adams, 1855 accepted as Attiliosa nodulosa (A. Adams, 1855)
- Species Peristernia paulucciae Tapparone Canefri, 1879 accepted as Clivipollia incarnata (Deshayes, 1833)
- Species Peristernia philberti (Récluz, 1844) accepted as Latirus philberti (Récluz, 1844)
- Species Peristernia pilsbryi Kuroda & Habe, 1952 accepted as Fusolatirus coreanicus (E. A. Smith, 1879)
- Species Peristernia preluchuana MacNeil, 1961 †
- Species Peristernia pulchella (Reeve, 1847)
- Species Peristernia pumila Tate, 1889 † accepted as Austromitra pumila (Tate, 1889) †
- Species Peristernia purpuroides Tate, 1888 † accepted as Bedeva purpuroides (Tate, 1888) †
- Species Peristernia puruensis (K. Martin, 1914) †
- Species Peristernia reincarnata M. A. Snyder, 2000
- Species Peristernia retiaria Melvill, 1891
- Species Peristernia rhodostoma (A. Adams, 1855) accepted as Latirus rhodostoma (A. Adams, 1855)
- Species Peristernia rollandi (Bernardi & Crosse, 1861)
- Species Peristernia rubens (Lamarck, 1822) accepted as Benimakia rubens (Lamarck, 1822)
- Species Peristernia rudolphi Brazier, 1894 accepted as Litozamia rudolphi (Brazier, 1894)
- Species Peristernia scabra (Souverbie, 1869)
- Species Peristernia scabrosa (Reeve, 1847) accepted as Peristernia chlorostoma (G. B. Sowerby I, 1825)
- Species Peristernia schepmani Dekkers, 2014
- Species Peristernia selinae Melvill, 1891 accepted as Peristernia chlorostoma (G. B. Sowerby I, 1825)
- Species Peristernia semiundulata Pritchard, 1896 † accepted as Tasmeuthria semiundulata (Pritchard, 1896) †
- Species Peristernia smithiana Melvill, 1891
- Species Peristernia solida (Reeve, 1846)
- Species Peristernia sowerbyi (Melvill, 1907) accepted as Benimakia sowerbyi (Melvill, 1907)
- Species Peristernia squamosa (Pease, 1863)
- Species Peristernia stigmataria A. Adams, 1855 accepted as Peristernia chlorostoma (G. B. Sowerby I, 1825)
- Species Peristernia strangei (A. Adams, 1855) accepted as Latirus strangei A. Adams, 1855
- Species Peristernia striata (Pease, 1868) accepted as Morula striata (Pease, 1868)
- Species Peristernia striata (Gray, 1839)
- Species Peristernia subundulosa Tate, 1888 † accepted as Streptopelma subundulosa (Tate, 1888) †
- Species Peristernia sulcata (Gray, 1839)
- Species Peristernia tahitiensis Dautzenberg & Bouge, 1933 accepted as Peristernia taitensis (R. P. Lesson, 1842)
- Species Peristernia taitensis (R. P. Lesson, 1842)
- Species Peristernia tayloriana (Reeve, 1848) accepted as Microcolus dunkeri (Jonas, 1846)
- Species Peristernia thaanumi Pilsbry & Bryan, 1918 accepted as Clivipollia costata (Pease, 1860)
- Species Peristernia tulipa (A. Lesson, 1842)
- Species Peristernia ustulata (Reeve, 1847)
- Species Peristernia venusta E. A. Smith, 1911
- Species Peristernia vezzaroi T. Cossignani, 2024
- Species Peristernia violacea (Reeve, 1847)
- Species Peristernia wagneri (Anton, 1838) accepted as Pollia wagneri (Anton, 1838)
- Species Peristernia waisiuensis (K. Martin, 1933) †
- Species Peristernia waluensis Ladd, 1977 †
- Species Peristernia woodwardiana (K. Martin, 1884) †
- Species Peristernia xantochroa (Tapparone Canefri, 1881) accepted as Latirus xantochrous (Tapparone Canefri, 1881)
- Species Peristernia zealandica (Küster & Kobelt, 1876) accepted as Benimakia rubens (Lamarck, 1822)
- Genus Pleia H. J. Finlay, 1930 † (3)
- Genus Psammostoma Vermeij & M. A. Snyder, 2002 †
- Genus Pseudolatirus Bellardi, 1884 † (9)
- Genus Pustulatirus Vermeij & M. A. Snyder, 2006 (11)
- Genus Snyderifusus Harzhauser, Landau & Vermeij, 2024 † (1)
- Genus Streptocarina Hinsch, 1977 † accepted as Latirulus Cossmann, 1889
- Genus Streptodictyon Tembrock, 1961 † accepted as Latirulus Cossmann, 1889
- Genus Streptolathyrus Cossmann, 1901 † accepted as Latirulus Cossmann, 1889
- Genus Streptopelma Cossmann, 1901 † accepted as Dennantia Tate, 1888 †
- Genus Tarantinaea Monterosato, 1917 (7)
- Genus Taron F. W. Hutton, 1882 (4)
- Genus Turrilatirus Vermeij & M. A. Snyder, 2006 (9)
- 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