Between brackets is the number of accepted species

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- Mollusca (133 221)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 077)
- Class Caudofoveata (143)
- Class Cephalopoda (1 917)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 971)
- Subclass Amphigastropoda † (434)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 793)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 921)
- Order Caenogastropoda incertae sedis (7 676)
- Order Littorinimorpha (17 225)
- 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 (1 299)
- 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 (689)
- Family Naticidae Guilding, 1834 (689)
- Subfamily Globisininae A. W. B. Powell, 1933 (24)
- Subfamily Naticidae incertae sedis (8)
- Subfamily Naticinae Guilding, 1834 (262)
- Subfamily Polinicinae J. E. Gray, 1847 (263)
- Genus Acrybia H. Adams & A. Adams, 1853 accepted as Bulbus T. Brown, 1839
- Genus Albula Röding, 1798 accepted as Polinices Montfort, 1810
- Genus Amauropsis Mörch, 1857 (13)
- Genus Bulbus T. Brown, 1839 (5)
- Genus Choristes P. P. Carpenter, 1872 accepted as Amauropsis Mörch, 1857
- Species Choristes agulhasae A. H. Clarke, 1961 accepted as Trenchia agulhasae (A. H. Clarke, 1961)
- Species Choristes carpenteri Dall, 1896 accepted as Benthobulbus carpenteri (Dall, 1896)
- Species Choristes coani Marincovich, 1975 accepted as Benthobulbus coani (Marincovich, 1975)
- Species Choristes elegans P. P. Carpenter, 1872 accepted as Amauropsis islandica (Gmelin, 1791)
- Species Choristes mollis Okutani, 1964
- Species Choristes nipponica Okutani, 1964 accepted as Moelleriopsis nipponica (Okutani, 1964)
- Species Choristes pompholyx (Dall, 1889) accepted as Cyclostrema pompholyx Dall, 1889
- Species Choristes vitreus Kuroda & Habe, 1971 accepted as Choristella vitrea (Kuroda & Habe, 1971)
- Genus Conuber H. J. Finlay & Marwick, 1937 (10)
- Genus Eucaryum Ehrenberg, 1831 accepted as Polinices Montfort, 1810
- Genus Euspira Agassiz, 1837 (87)
- Genus Friginatica Hedley, 1916 (12)
- Genus Glossaulax Pilsbry, 1929 (9)
- Genus Hypterita Woodring, 1957 (2)
- Genus Kerguelenatica A. W. B. Powell, 1951 (1)
- Genus Labellinacca Cossmann, 1919 † accepted as Euspira Agassiz, 1837
- Genus Lunatia J. E. Gray, 1847 accepted as Euspira Agassiz, 1837
- Genus Mamilla accepted as Mammilla Schumacher, 1817
- Genus Mamillaria Swainson, 1840 accepted as Polinices Montfort, 1810
- Genus Mamma H. Adams & A. Adams, 1853 accepted as Polinices Montfort, 1810
- Genus Mammilla Schumacher, 1817 (15)
- Genus Mammillaria Herrmannsen, 1847 accepted as Mamillaria Swainson, 1840
- Genus Naticaria Swainson, 1840 accepted as Mammilla Schumacher, 1817
- Genus Naticella Swainson, 1840 accepted as Polinices Montfort, 1810
- Genus Naticina Guilding, 1834 accepted as Polinices Montfort, 1810
- Genus Neverita Risso, 1826 (19)
- Genus Payraudeautia Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Euspira Agassiz, 1837
- Genus Polinices Montfort, 1810 (74)
- Genus Polynices Herrmannsen, 1847 accepted as Polinices Montfort, 1810
- Genus Pseudopolinices A. N. Golikov & Sirenko, 1983 (1)
- Genus Ruma Gray, 1847 accepted as Mammilla Schumacher, 1817
- Genus Sinuber A. W. B. Powell, 1951 (3)
- Genus Sulconacca Marwick, 1924 † accepted as Friginatica Hedley, 1916
- Genus Tahunacca P. A. Maxwell, 1992 † (2)
- Genus Uber R. A. Philippi, 1853 accepted as Polinices Montfort, 1810
- Genus Uberella H. J. Finlay, 1928 (10)
- Subfamily Sininae Woodring, 1928 (82)
- Genus Amauropsina Chelot, 1885 † (3)
- Genus Amauropsona H. J. Finlay & Marwick, 1937 † (2)
- Genus Austrocochlis H. J. Finlay & Marwick, 1937 † (2)
- Genus Bensonia J. E. Gray, 1847 accepted as Laguncula W. H. Benson, 1842
- Genus Benthobulbus J. H. McLean, 1995 (2)
- Genus Carinacca Marwick, 1924 † (4)
- Genus Cepatia J. E. Gray, 1842 † (2)
- Genus Darwinices Griffin & Pastorino, 2013 † (3)
- Genus Laguncula W. H. Benson, 1842 (1)
- Genus Magnatica Marwick, 1924 † (13)
- Genus Maxwellinatica Beu & B. A. Marshall, 2011 † (1)
- Genus Nanggulania K. Martin, 1914 † (1)
- Genus Natiria de Koninck, 1881 † (1)
- Genus Pliconacca K. Martin, 1914 † (6)
- Genus Polinella Marwick, 1931 † (9)
- Genus Prisconatica Gabb, 1877 †
- Genus Scarlatia Schileyko, 1977 accepted as Laguncula W. H. Benson, 1842
- Genus Uba [sic] † accepted as Uber R. A. Philippi, 1853
- Family Polynicidae [sic!] accepted as Polinicinae J. E. Gray, 1847
- 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 (2 312)
- Superfamily Stromboidea Rafinesque, 1815 (836)
- Superfamily Tonnoidea Suter, 1913 (1825) (788)
- Superfamily Truncatelloidea J. E. Gray, 1840 (6 931)
- 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 (23 824)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (309)
- Subclass Heterobranchia (39 217)
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 915)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (514)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 789)
- 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 (1 381)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (753)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata