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)
- 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 (1 279)
- Family Amphiperatidae J. E. Gray, 1853 accepted as Ovulidae J. Fleming, 1822
- Family Cypraeidae Rafinesque, 1815 (811)
- Subfamily Adustinae Cotton & Steadman, 1946 accepted as Erroneinae F. A. Schilder, 1927
- Subfamily Archicypraeinae F. A. Schilder, 1927 † accepted as Gisortiinae F. A. Schilder, 1927 †
- Subfamily Bernayinae Schilder, 1927 † accepted as Gisortiinae F. A. Schilder, 1927 †
- Subfamily Cypraeinae Rafinesque, 1815 (140)
- Subfamily Cypraeovulinae F. A. Schilder, 1927 (48)
- Subfamily Erosariinae Schilder, 1924 (118)
- Genus Albacypraea Steadman & Cotton, 1946 accepted as Naria J. E. Gray, 1837
- Genus Aricia J. E. Gray, 1837 accepted as Monetaria Troschel, 1863
- Genus Bouchetaria Castelin & Lorenz, 2024 (1)
- Genus Brugnonia Jeffreys, 1883 accepted as Naria J. E. Gray, 1837
- Genus Conocypraea Oppenheim, 1901 † (1)
- Genus Cryptocypraea C. Meyer, 2003 (2)
- Genus Cupinota Iredale, 1939 accepted as Purpuradusta F. A. Schilder, 1939
- Genus Cypraeacites Schlotheim, 1820 † accepted as Conocypraea Oppenheim, 1901 †
- Genus Eopustularia Fehse, 2010 † accepted as Subepona Dolin & Lozouet, 2004 †
- Genus Erosaria Troschel, 1863 accepted as Naria J. E. Gray, 1837
- Genus Eustaphylaea Steadman & Cotton, 1946 accepted as Staphylaea Jousseaume, 1884
- Genus Ipsa Jousseaume, 1884 (1)
- Genus Kurodadusta Shikama, 1971 accepted as Nesiocypraea M. Azuma & Kurohara, 1967
- Genus Maestratia Dolin & Aguerre, 2019 † (11)
- Genus Monetaria Troschel, 1863 (6)
- Genus Naria J. E. Gray, 1837 (33)
- Species Naria acicularis (Gmelin, 1791)
- Species Naria agassizi (Ladd, 1934) †
- Species Naria albuginosa (J. E. Gray, 1825)
- Species Naria beckii (Gaskoin, 1836)
- Species Naria bernardi (Richard, 1974)
- Species Naria bezoyensis (Dolin & Lozouet, 2004) †
- Species Naria boivinii (Kiener, 1844)
- Species Naria cernica (G. B. Sowerby II, 1870)
- Subspecies Naria cernica cernica (G. B. Sowerby II, 1870)
- Subspecies Naria cernica leforti (J. Senders & P. Martin, 1987)
- Subspecies Naria cernica marielae (C. N. Cate, 1960) accepted as Naria cernica cernica (G. B. Sowerby II, 1870)
- Subspecies Naria cernica ogasawarensis (Schilder, 1944) accepted as Naria cernica cernica (G. B. Sowerby II, 1870)
- Subspecies Naria cernica tomlini (Schilder, 1930) accepted as Naria cernica cernica (G. B. Sowerby II, 1870)
- Subspecies Naria cernica viridicolor (C. N. Cate, 1962)
- Species Naria citrina (J. E. Gray, 1825)
- Species Naria eburnea (Barnes, 1824)
- Species Naria englerti (Summers & C. M. Burgess, 1965)
- Species Naria erosa (Linnaeus, 1758)
- Species Naria everwijni (K. Martin, 1884) †
- Species Naria franzhuberi Thach, 2020
- Species Naria gangranosa (Dillwyn, 1817)
- Species Naria helvola (Linnaeus, 1758)
- Species Naria irrorata (J. E. Gray, 1828)
- Species Naria kutaiana (Beets, 1983) †
- Species Naria labrolineata (Gaskoin, 1849)
- Species Naria lamarckii (J. E. Gray, 1825)
- Species Naria macandrewi (G. B. Sowerby II, 1870)
- Species Naria marginalis (Dillwyn, 1827)
- Species Naria miliaris (Gmelin, 1791)
- Species Naria nebrites (Melvill, 1888)
- Species Naria nganguyeni Thach, 2024
- Species Naria ocellata (Linnaeus, 1758)
- Species Naria ostergaardi (Dall, 1921)
- Species Naria poraria (Linnaeus, 1758)
- Species Naria praehelvola Fehse & Vicián, 2021 †
- Species Naria sokkohensis (F. A. Schilder, 1937) †
- Species Naria spurca (Linnaeus, 1758)
- Species Naria thomasi (Crosse, 1865)
- Species Naria turdus (Lamarck, 1810)
- Genus Nesiocypraea M. Azuma & Kurohara, 1967 (4)
- Genus Nesyocypraea [sic] accepted as Nesiocypraea M. Azuma & Kurohara, 1967
- Genus Nuclearia Jousseaume, 1884 accepted as Nucleolaria Oyama, 1959
- Genus Nucleolaria Oyama, 1959 (4)
- Genus Ornamentaria M. Schilder & F. A. Schilder, 1937 accepted as Monetaria Troschel, 1863
- Genus Paulonaria Iredale, 1930 accepted as Naria J. E. Gray, 1837
- Genus Perisserosa Iredale, 1930 (1)
- Genus Praerosaria Dolin & Lozouet, 2004 † (14)
- Genus Propustularia F. A. Schilder, 1927 (5)
- Genus Purperosa Iredale, 1935 accepted as Staphylaea Jousseaume, 1884
- Genus Ravitrona Iredale, 1930 accepted as Monetaria Troschel, 1863
- Genus Staphylaea Jousseaume, 1884 (3)
- Genus Subepona Dolin & Lozouet, 2004 † (32)
- Subfamily Erroneinae F. A. Schilder, 1927 (149)
- Subfamily Gisortiinae F. A. Schilder, 1927 † (60)
- Subfamily Luriinae Schilder, 1932 (90)
- Subfamily Mandolininae Schilder, 1932 † accepted as Gisortiinae F. A. Schilder, 1927 †
- Subfamily Mauritiinae Steadman & Cotton, 1946 accepted as Mauritiini Steadman & Cotton, 1946
- Subfamily Pustulariinae Gill, 1871 (9)
- Subfamily Umbiliinae Schilder, 1932 (23)
- Subfamily Zoilinae Iredale, 1935 (35)
- Subfamily Zonariinae F. A. Schilder, 1932 (139)
- Genus Protopirula Rennie, 1930 † accepted as Cypraea Linnaeus, 1758
- Genus Sinusigera A. d'Orbigny, 1853
- Family Eocypraeidae F. A. Schilder, 1924 (74)
- Family Ovulidae J. Fleming, 1822 (394)
- Family Pediculariidae Gray, 1853 accepted as Pediculariinae Gray, 1853
- 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 (2 309)
- 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)
- Superfamily Velutinoidea Gray, 1840 (648)
- Superfamily Vermetoidea Rafinesque, 1815 (172)
- Superfamily Xenophoroidea Troschel, 1852 (1840) accepted as Stromboidea Rafinesque, 1815
- Order Neogastropoda (23 713)
- 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