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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)
- Superfamily Calyptraeoidea Lamarck, 1809 (203)
- Superfamily Capuloidea J. Fleming, 1822 (218)
- Superfamily Cassoidea accepted as Tonnoidea Suter, 1913 (1825)
- Superfamily Cingulopsoidea Fretter & Patil, 1958 (193)
- Superfamily Crepiduloidea J. Fleming, 1822 accepted as Calyptraeoidea Lamarck, 1809
- Superfamily Cypraeoidea Rafinesque, 1815 (1 285)
- Superfamily Eulimoidea R. A. Philippi, 1853 accepted as Vanikoroidea Gray, 1840
- Superfamily Ficoidea Meek, 1864 (1840) (71)
- Superfamily Heteropoda Lamarck, 1812 accepted as Pterotracheoidea Rafinesque, 1814
- Superfamily Hipponicoidea Troschel, 1861 (99)
- Superfamily Littorinoidea Children, 1834 (1 372)
- Superfamily Naticoidea Guilding, 1834 (688)
- Superfamily Pterotracheoidea Rafinesque, 1814 (63)
- Superfamily Rissoacea accepted as Rissooidea Gray, 1847
- Superfamily Rissoinoidea W. Stimpson, 1865 accepted as Rissooidea Gray, 1847
- Superfamily Rissooidea Gray, 1847 (2 311)
- Superfamily Stromboidea Rafinesque, 1815 (835)
- Superfamily Tonnoidea Suter, 1913 (1825) (788)
- Superfamily Truncatelloidea J. E. Gray, 1840 (6 902)
- Superfamily Vanikoroidea Gray, 1840 (1 331)
- Family Aclididae G. O. Sars, 1878 accepted as Eulimidae R. A. Philippi, 1853
- Family Asterophilidae Thiele, 1925 accepted as Eulimidae R. A. Philippi, 1853
- Family Enteroxenidae Schwanwitsch, 1917 accepted as Eulimidae R. A. Philippi, 1853
- Family Entocolacidae Voigt, 1888 accepted as Eulimidae R. A. Philippi, 1853
- Family Entoconchidae Keferstein, 1864 accepted as Eulimidae R. A. Philippi, 1853
- Family Eulimidae R. A. Philippi, 1853 (1 095)
- Subfamily Enteroxeninae Schwanwitsch, 1917 accepted as Eulimidae R. A. Philippi, 1853
- Genus Abyssoaclis J. Barros, Mello, F. Barros, S. Lima, Santos, Cabral & Padovan, 2003 (1)
- Genus Acicularia Monterosato, 1884 accepted as Crinophtheiros Bouchet & Warén, 1986
- Genus Aclis Lovén, 1846 (62)
- Genus Acrochalix Bouchet & Warén, 1986 (1)
- Genus Amamibalcis Kuroda & T. Habe, 1950 (6)
- Genus Annulobalcis T. Habe, 1965 (11)
- Genus Apicalia A. Adams, 1862 (10)
- Genus Arcuella G. Nevill & H. Nevill, 1874 (1)
- Genus Asterolamia Warén, 1980 (2)
- Genus Asterophila Randall & Heath, 1912 (3)
- Genus Athleenia Bartsch, 1946 accepted as Oceanida de Folin, 1870
- Genus Auriculigerina Dautzenberg, 1925 accepted as Chileutomia Tate & Cossmann, 1898
- Genus Awanuia A. W. B. Powell, 1927 (3)
- Genus Bacula H. Adams & A. Adams, 1863 (3)
- Genus Balcis Leach, 1847 accepted as Melanella Bowdich, 1822
- Genus Batheulima F. Nordsieck, 1968 (5)
- Genus Bathycrinicola Bouchet & Warén, 1986 (8)
- Genus Bessomia S. S. Berry, 1959 accepted as Thyca H. Adams & A. Adams, 1854
- Genus Bonellia Deshayes, 1838 † accepted as Niso Risso, 1826
- Genus Bulimeulima Bouchet & Warén, 1986 (4)
- Genus Camporellina Bertolaso & Palazzi, 1997 † (1)
- Genus Campylorhaphion Bouchet & Warén, 1986 (3)
- Genus Charilda Iredale, 1929 (1)
- Genus Chileutomia Tate & Cossmann, 1898 (6)
- Genus Chryseulima Laseron, 1955 accepted as Apicalia A. Adams, 1862
- Genus Clypeastericola Warén, 1994 (2)
- Genus Comenteroxenos Tikasingh, 1961 accepted as Enteroxenos Bonnevie, 1902
- Genus Concavibalcis Warén, 1980 (4)
- Genus Costaclis Bartsch, 1947 (3)
- Genus Crinolamia Bouchet & Warén, 1979 (5)
- Genus Crinophtheiros Bouchet & Warén, 1986 (4)
- Genus Curveulima Laseron, 1955 (23)
- Genus Cuspeulima Laseron, 1955 accepted as Eulima Risso, 1826
- Genus Cyclonidea Laseron, 1956 (4)
- Genus Diacolax Mandahl-Barth, 1946 (1)
- Genus Discaclis Moolenbeek & Warén, 1987 (2)
- Genus Ebion Gistel, 1848 † accepted as Niso Risso, 1826
- Genus Echineulima Lützen & C. Nielsen, 1975 (8)
- Genus Echiuroidicola Warén, 1980 (1)
- Genus Enteroxenos Bonnevie, 1902 (3)
- Genus Entocolax Voigt, 1888 (7)
- Genus Entoconcha J. Müller, 1852 (1)
- Genus Entosiphon Koehler & Vaney, 1903 accepted as Gasterosiphon Koehler & Vaney, 1905
- Genus Ersilia Monterosato, 1872 (4)
- Genus Euliamaustra [sic] accepted as Eulimaustra Laseron, 1955
- Genus Eulima Risso, 1826 (140)
- Genus Eulimacrostoma L. Souza & Pimenta, 2019 (6)
- Genus Eulimaustra Laseron, 1955 accepted as Melanella Bowdich, 1822
- Genus Eulimetta Warén, 1992 (4)
- Genus Eulimitra Laseron, 1955 accepted as Hemiliostraca Pilsbry, 1917
- Genus Eulimoda Laseron, 1955 accepted as Sabinella Monterosato, 1890
- Genus Eulimostraca Bartsch, 1917 (10)
- Genus Eulitoma Laseron, 1955 (7)
- Genus Fuscapex Warén, 1981 (7)
- Genus Fusceulima Laseron, 1955 (27)
- Genus Fusceulimoides Takano, Kano, Mogi & Okanishi, 2023 (1)
- Genus Gasterosiphon Koehler & Vaney, 1905 (1)
- Genus Goodingia Lützen, 1972 (3)
- Genus Goriella Moolenbeek, 2008 (2)
- Genus Goubinia Dautzenberg, 1923 (1)
- Genus Granulithyca T. Habe, 1976 accepted as Thyca H. Adams & A. Adams, 1854
- Genus Haliella Monterosato, 1878 (7)
- Genus Halielloides Bouchet & Warén, 1986 (4)
- Genus Halliella Monterosato, 1878 accepted as Haliella Monterosato, 1878
- Genus Hebeulima Laseron, 1955 (6)
- Genus Helicosyrinx Baur, 1864 accepted as Entoconcha J. Müller, 1852
- Genus Hemiaclis G. O. Sars, 1878 (6)
- Genus Hemiliostraca Pilsbry, 1917 (24)
- Genus Hersilia Monterosato, 1884 accepted as Ersilia Monterosato, 1872
- Genus Hoplopteron P. Fischer, 1876 (3)
- Genus Hoplopteropsis de Morgan, 1916 † accepted as Chileutomia Tate & Cossmann, 1898
- Genus Hordeulima Sacco, 1892 accepted as Eulima (Hordeulima) Sacco, 1892 †
- Genus Hyperlia Pilsbry, 1917 accepted as Scalenostoma Deshayes, 1863
- Genus Hypermastus Pilsbry, 1899 (38)
- Genus Janella Grateloup, 1838 † accepted as Niso Risso, 1826
- Genus Kimberia Cotton & N. H. Woods, 1935 (1)
- Genus Kiramodulus Kuroda, 1949 accepted as Thyca H. Adams & A. Adams, 1854
- Genus Lambertia Souverbie, 1869 accepted as Stilapex Iredale, 1925
- Genus Leiostraca H. Adams & A. Adams, 1853 accepted as Eulima Risso, 1826
- Genus Lentigobalcis T. Habe, 1962 accepted as Sticteulima Laseron, 1955
- Genus Luetzenia Warén, 1980 accepted as Echineulima Lützen & C. Nielsen, 1975
- Genus Luetzenia Rehder, 1980 accepted as Robillardia E. A. Smith, 1889
- Genus Margineulima Cossmann, 1888 † (8)
- Genus Megadenus Rosén, 1910 (6)
- Genus Melanella Bowdich, 1822 (242)
- Genus Menon Hedley, 1900 (1)
- Genus Microeulima Warén, 1992 (3)
- Genus Molpadicola Grusov, 1957 (1)
- Genus Monogamus Lützen, 1976 (5)
- Genus Mucronalia A. Adams, 1860 (14)
- Species Mucronalia aethria Melvill, 1918 accepted as Melanella aethria (Melvill, 1918)
- Species Mucronalia alba Takano, H. Tanaka & Kano, 2019
- Species Mucronalia angulata Mandahl-Barth, 1949 accepted as Scalaribalcis angulata (Mandahl-Barth, 1949)
- Species Mucronalia bicincta A. Adams, 1860
- Species Mucronalia birtsi Preston, 1904 accepted as Stilifer birtsi (Preston, 1904)
- Species Mucronalia bizonula Melvill, 1906
- Species Mucronalia bulimuloides Dall, 1927
- Species Mucronalia capillastericola Minichev, 1970 accepted as Goodingia capillastericola (Minichev, 1970)
- Species Mucronalia cylindrica G. B. Sowerby III, 1900 accepted as Hypermastus cylindricus (G. B. Sowerby III, 1900)
- Species Mucronalia eburnea Schepman, 1909 accepted as Stilapex eburnea (Schepman, 1909)
- Species Mucronalia epibathra (Melvill, 1906) accepted as Mumiola epibathra Melvill, 1906
- Species Mucronalia exilis A. Adams, 1862
- Species Mucronalia exquisita G. B. Sowerby III, 1915
- Species Mucronalia gigas Kuroda & Habe, 1950 accepted as Melanella teinostoma (A. Adams, 1854)
- Species Mucronalia gracilis Pease, 1868 accepted as Peasistilifer gracilis (Pease, 1868)
- Species Mucronalia interrupta (A. Adams, 1863) accepted as Eulima interrupta (A. Adams, 1863)
- Species Mucronalia involuta P. P. Carpenter, 1865
- Species Mucronalia lactea (A. Adams, 1863) accepted as Melanella tanabensis Takano, H. Tanaka & Kano, 2019
- Species Mucronalia lepida Melvill, 1906
- Species Mucronalia leucophaes Tomlin & Shackleford, 1913 accepted as Echineulima leucophaes (Tomlin & Shackleford, 1913)
- Species Mucronalia mammillata Dall, 1927
- Species Mucronalia nidorum Pilsbry, 1956 accepted as Sabinella troglodytes (Thiele, 1925)
- Species Mucronalia nitidula Pease, 1861 accepted as Peasistilifer nitidula (Pease, 1861)
- Species Mucronalia ophiuraphila Habe, 1974 accepted as Goodingia ophiuraphila (Habe, 1974)
- Species Mucronalia ovata Pease, 1861 accepted as Apicalia ovata (Pease, 1861)
- Species Mucronalia oxytenes Melvill, 1904
- Species Mucronalia palmipedis Koehler & Vaney, 1912 accepted as Apicalia palmipedis (Koehler & Vaney, 1912)
- Species Mucronalia parva Schepman, 1909 accepted as Stilapex parva (Schepman, 1909)
- Species Mucronalia philippinarum G. B. Sowerby III, 1900 accepted as Echineulima mittrei (Petit de la Saussaye, 1851)
- Species Mucronalia pinguicula Ortega & Gofas, 2019
- Species Mucronalia propinqua (Cossmann, 1888) †
- Species Mucronalia rosea Pease, 1861
- Species Mucronalia ryukyuensis Takano, Kubo & Oguchi, 2022
- Species Mucronalia sandvichensis (G. B. Sowerby II, 1865) accepted as Apicalia ovata (Pease, 1861)
- Species Mucronalia suava Dall, 1927 accepted as Mucronalia mammillata Dall, 1927
- Species Mucronalia subula A. Adams, 1864 accepted as Hypermastus subula (A. Adams, 1864)
- Species Mucronalia trilineata Warén, 1980
- Species Mucronalia tumida Tryon, 1886
- Species Mucronalia variabilis Schepman & Nierstrasz, 1914 accepted as Melanella variabilis (Schepman & Nierstrasz, 1914)
- Species Mucronalia varicosa Schepman, 1909 accepted as Goodingia varicosa (Schepman, 1909)
- Species Mucronalia xanthias R. B. Watson, 1886 accepted as Pelycidion xanthias (R. B. Watson, 1886)
- Genus Mucronella A. W. Ivanov, 1973 accepted as Mucronalia A. Adams, 1860
- Genus Nanobalcis Warén & Mifsud, 1990 (3)
- Genus Neovolusia W. K. Emerson, 1965 accepted as Niso Risso, 1826
- Genus Niso Risso, 1826 (55)
- Genus Oceanida de Folin, 1870 (11)
- Genus Ophieulima Warén & Sibuet, 1981 (6)
- Genus Ophioarachnicola Warén, 1980 (3)
- Genus Ophiolamia Warén & Carney, 1981 (2)
- Genus Paedophoropus A. W. Ivanov, 1933 (1)
- Genus Paedophorus [sic] accepted as Paedophoropus A. W. Ivanov, 1933
- Genus Paleothyca Forner, Domènech & Martinell, 2022 † (1)
- Genus Palisadia Laseron, 1956 (3)
- Genus Paramegadenus Humphreys & Lützen, 1972 (3)
- Genus Parastilbe Cossmann, 1900 (1)
- Genus Parastilifer A. W. Ivanov, 1952 accepted as Pelseneeria Koehler & Vaney, 1908
- Genus Parenteroxenos A. W. Ivanov, 1945 accepted as Thyonicola Mandahl-Barth, 1941
- Genus Parvioris Warén, 1981 (21)
- Genus Peasistilifer Warén, 1980 (6)
- Genus Pelseneeria Koehler & Vaney, 1908 (17)
- Genus Pictobalcis Laseron, 1955 (1)
- Genus Pisolamia Bouchet & Lützen, 1976 (1)
- Genus Polygireulima Sacco, 1892 (8)
- Genus Polygyreulima accepted as Polygireulima Sacco, 1892
- Genus Prostilifer Warén, 1980 (1)
- Genus Pseudosabinella J. H. McLean, 1995 (1)
- Genus Ptereulima T. L. Casey, 1902 † accepted as Hoplopteron P. Fischer, 1876
- Genus Pulicicochlea Ponder & Gooding, 1978 (4)
- Genus Punctifera Warén, 1981 (1)
- Genus Pyramidelloides G. Nevill, 1885 (10)
- Genus Rectilabrum Bouchet & Warén, 1986 (3)
- Genus Robillardia E. A. Smith, 1889 (2)
- Genus Rosenia Nierstrasz, 1913 accepted as Pelseneeria Koehler & Vaney, 1908
- Genus Rostreulima Cossmann, 1913 † (2)
- Genus Ruapukea Dell, 1952 (2)
- Genus Sabinella Monterosato, 1890 (11)
- Genus Sanciaella Moolenbeek & Hoenselaar, 2010 (1)
- Genus Scalaribalcis Warén, 1980 (1)
- Genus Scalaronoba A. W. B. Powell, 1927 (6)
- Genus Scalenostoma Deshayes, 1863 (5)
- Genus Selma A. Adams, 1863
- Genus Semistylifer Cossmann, 1921 † (1)
- Genus Severnsia D. L. Geiger, 2016 (1)
- Genus Spiroclimax Mörch, 1875 accepted as Oceanida de Folin, 1870
- Genus Sticteulima Laseron, 1955 (19)
- Genus Stilapex Iredale, 1925 (11)
- Genus Stilbe Jeffreys, 1884 accepted as Parastilbe Cossmann, 1900
- Genus Stilifer Broderip, 1832 (14)
- Genus Stilimella Laseron, 1955 accepted as Scalenostoma Deshayes, 1863
- Genus Strombiformis da Costa, 1778 accepted as Eulima Risso, 1826
- Genus Stylapex accepted as Stilapex Iredale, 1925
- Genus Stylifer P. Fischer, 1864 accepted as Stilifer Broderip, 1832
- Genus Stylina J. Fleming, 1828 accepted as Pelseneeria Koehler & Vaney, 1908
- Genus Subeulima Souverbie, 1875 accepted as Bacula H. Adams & A. Adams, 1863
- Genus Subniso J. H. McLean, 2000 (3)
- Genus Subularia Monterosato, 1884 accepted as Eulima Risso, 1826 (1)
- Genus Teretianax Iredale, 1918 (5)
- Genus Teretinax [sic] accepted as Teretianax Iredale, 1918 (1)
- Genus Thaleia Warén, 1979 (2)
- Genus Thyca H. Adams & A. Adams, 1854 (9)
- Genus Thyonicola Mandahl-Barth, 1941 (3)
- Genus Trochostilifer Warén, 1980 (6)
- Genus Tropiometricola Warén, 1981 (1)
- Genus Turtonia Rosén, 1910 accepted as Pelseneeria Koehler & Vaney, 1908
- Genus Turveria S. S. Berry, 1956 (3)
- Genus Umbilibalcis Bouchet & Warén, 1986 (3)
- Genus Venustilifer A. W. B. Powell, 1939 accepted as Pelseneeria Koehler & Vaney, 1908
- Genus Vitreobalcis Warén, 1980 (5)
- Genus Vitreolina Monterosato, 1884 (33)
- Genus Volusia A. Adams, 1861 accepted as Niso Risso, 1826
- Family Gigantocapulidae Beu, 2007 † (1)
- Family Melanellidae Iredale, 1915 accepted as Eulimidae R. A. Philippi, 1853
- Family Merriidae Hedley, 1918 accepted as Vanikoridae Gray, 1840
- Family Naricidae Récluz, 1845 accepted as Vanikoridae Gray, 1840
- Family Paedophoropodidae A. W. Ivanov, 1933 accepted as Eulimidae R. A. Philippi, 1853
- Family Pelseneeriidae Schwanwitsch, 1917 accepted as Eulimidae R. A. Philippi, 1853
- Family Pherusidae Locard, 1886 accepted as Aclididae G. O. Sars, 1878
- Family Roseniidae Nierstrasz, 1913 accepted as Eulimidae R. A. Philippi, 1853
- Family Stiliferidae H. Adams & A. Adams, 1853 accepted as Eulimidae R. A. Philippi, 1853
- Family Strombiformidae Iredale, 1915 accepted as Eulimidae R. A. Philippi, 1853
- Family Stylinidae R. A. Philippi, 1853 accepted as Eulimidae R. A. Philippi, 1853
- Family Thycidae Thiele, 1929 accepted as Eulimidae R. A. Philippi, 1853
- Family Turtoniidae Rosén, 1910 accepted as Eulimidae R. A. Philippi, 1853
- Family Vanikoridae Gray, 1840 (235)
- Subfamily Thycinae Thiele, 1929 accepted as Eulimidae R. A. Philippi, 1853
- Superfamily Velutinoidea Gray, 1840 (648)
- Superfamily Vermetoidea Rafinesque, 1815 (172)
- Superfamily Xenophoroidea Troschel, 1852 (1840) accepted as Stromboidea Rafinesque, 1815
- Order Neogastropoda (23 716)
- 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