Between brackets is the number of accepted species

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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)
- Order Neogastropoda (23 716)
- Superfamily Buccinoidea Rafinesque, 1815 (5 253)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 674)
- Superfamily Mitroidea Swainson, 1831 (633)
- Superfamily Muricacea accepted as Muricoidea Rafinesque, 1815
- Superfamily Muricoidea Rafinesque, 1815 (2 940)
- Family Concholepadidae Perrier, 1897 accepted as Rapaninae Gray, 1853
- Family Coralliophilidae Chenu, 1859 accepted as Coralliophilinae Chenu, 1859
- Family Magilidae Thiele, 1925 accepted as Coralliophilinae Chenu, 1859
- Family Muricidae Rafinesque, 1815 (2 937)
- Subfamily Aspellinae Keen, 1971 (547)
- Subfamily Colinae J. E. Gray, 1857 accepted as Colidae J. E. Gray, 1857
- Subfamily Coralliophilinae Chenu, 1859 (319)
- Subfamily Drupinae Wenz, 1938 accepted as Rapaninae Gray, 1853
- Subfamily Ergalataxinae Kuroda, T. Habe & Oyama, 1971 (188)
- Genus Arakawania Ponting, 2024 (7)
- Genus Azumamorula W. K. Emerson, 1968 (1)
- Genus Bedevina T. Habe, 1946 (1)
- Genus Cathymorula Landau, Houart & C. M. Silva, 2007 † (10)
- Genus Claremontiella Houart, Zuccon & Puillandre, 2019 (6)
- Genus Cronia H. Adams & A. Adams, 1853 (4)
- Genus Cumella Jousseaume, 1898 accepted as Lataxiena Jousseaume, 1883
- Genus Cytharomorula Kuroda, 1953 (17)
- Genus Drupella Thiele, 1925 (6)
- Genus Ergalatax Iredale, 1931 (9)
- Genus Evokesia Radwin & D'Attilio, 1972 accepted as Pascula Dall, 1908
- Genus Habromorula Houart, 1995 accepted as Morula (Habromorula) Houart, 1995
- Genus Janssenia Landau, Harzhauser, İslamoğlu & C. M. Silva, 2013 † (8)
- Genus Lataxiena Jousseaume, 1883 (9)
- Genus Lauta Houart, Zuccon & Puillandre, 2019 (1)
- Genus Lindapterys Petuch, 1987 (8)
- Genus Maculotriton Dall, 1904 (1)
- Genus Morula Schumacher, 1817 (34)
- Genus Morulina Dall, 1923 accepted as Azumamorula W. K. Emerson, 1968
- Genus Murichorda Houart, Zuccon & Puillandre, 2019 (3)
- Genus Muricodrupa Iredale, 1918 (4)
- Genus Oppomorus Iredale, 1937 (3)
- Genus Orania Pallary, 1900 (35)
- Genus Pascula Dall, 1908 (10)
- Genus Phrygiomurex Dall, 1904 (1)
- Genus Spinidrupa Habe & Kosuge, 1966 (3)
- Genus Tenguella Arakawa, 1965 accepted as Arakawania Ponting, 2024
- Genus Trachypollia Woodring, 1928 (5)
- Species Trachypollia didyma (Schwengel, 1943)
- Species Trachypollia granifera (Bellardi, 1873) †
- Species Trachypollia lugubris (C. B. Adams, 1852)
- Species Trachypollia nodulosa (C. B. Adams, 1845) accepted as Claremontiella nodulosa (C. B. Adams, 1845)
- Species Trachypollia sclera Woodring, 1928
- Species Trachypollia turricula (Maltzan, 1884)
- Genus Usilla H. Adams, 1861 (2)
- Subfamily Haustrinae K. S. Tan, 2003 (18)
- Subfamily Muricidae incertae sedis (209)
- Subfamily Muricinae Rafinesque, 1815 (493)
- Subfamily Muricopsinae Radwin & D'Attilio, 1971 accepted as Aspellinae Keen, 1971
- Subfamily Nucellopsinae Merle, 2024 † (5)
- Subfamily Ocenebrinae Cossmann, 1903 (561)
- Subfamily Pagodulinae Barco, Schiaparelli, Houart & Oliverio, 2012 (266)
- Subfamily Purpurellinae Bellardi, 1882 † accepted as Rapaninae Gray, 1853
- Subfamily Rapaninae Gray, 1853 (178)
- Subfamily Taurasinae Sacco, 1904 † accepted as Rapaninae Gray, 1853
- Subfamily Tripterotyphinae D'Attilio & C. M. Hertz, 1988 accepted as Muricopsinae Radwin & D'Attilio, 1971
- Subfamily Tritonaliinae Korobkov, 1955 accepted as Ocenebrinae Cossmann, 1903
- Subfamily Trophoninae Cossmann, 1903 accepted as Ocenebrinae Cossmann, 1903
- Subfamily Typhinae Cossmann, 1903 (153)
- Family Muricoidea incertae sedis (3)
- Family Nucellidae A. E. Salisbury, 1940 accepted as Ocenebrinae Cossmann, 1903
- Family Purpuridae Children, 1823 accepted as Rapaninae Gray, 1853
- Family Rapidae Kuroda, 1941 accepted as Coralliophilinae Chenu, 1859
- Family Thaididae Jousseaume, 1888 accepted as Rapaninae Gray, 1853
- Family Typhidae Cossmann, 1903 accepted as Typhinae Cossmann, 1903
- Subfamily Eburninae Swainson, 1840 accepted as Babyloniidae Kuroda, Habe & Oyama, 1971
- Subfamily Latrunculinae Cossmann, 1901 accepted as Babyloniidae Kuroda, Habe & Oyama, 1971
- 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 (39 156)
- 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