Between brackets is the number of accepted species

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- Mollusca (132 927)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 030)
- Subclass Autobranchia (23 308)
- Infraclass Heteroconchia (16 647)
- Subterclass Archiheterodonta (1 208)
- Subterclass Euheterodonta (11 365)
- Superorder Anomalodesmata (987)
- Superorder Imparidentia (10 345)
- Order Adapedonta (262)
- Order Cardiida (3 057)
- Order Galeommatida (790)
- Order Gastrochaenida (43)
- Order Hiatellida represented as Adapedonta
- Order Hippuritida † (322)
- Order Lucinida (997)
- Order Megalodontida † (141)
- Order Modiomorphida † (94)
- Order Myacea accepted as Myida
- Order Myida (924)
- Suborder Myina represented as Myida
- Superfamily Dreissenoidea J. E. Gray, 1840 (304)
- Superfamily Myoidea Lamarck, 1809 (309)
- Superfamily Pholadacea accepted as Pholadoidea Lamarck, 1809
- Superfamily Pholadoidea Lamarck, 1809 (294)
- Family Pholadidae Lamarck, 1809 (123)
- Family Teredinidae Rafinesque, 1815 (103)
- Subfamily Bankiinae R. D. Turner, 1966 (43)
- Genus Bankia Gray, 1842 (30)
- Genus Bankiella Bartsch, 1921 accepted as Bankia Gray, 1842
- Genus Bankiopsis Clench & R. D. Turner, 1946 accepted as Bankia Gray, 1842
- Genus Bankiura Moll, 1952 accepted as Bankia Gray, 1842
- Genus Clupibankia Moll, 1952 accepted as Bankia Gray, 1842
- Genus Deviobankia Iredale, 1932 accepted as Bankia Gray, 1842
- Genus Inequarista Iredale, 1932 accepted as Nausitora E. P. Wright, 1864
- Genus Liliobankia Clench & R. D. Turner, 1946 accepted as Bankia Gray, 1842
- Genus Lyrodobankia Moll, 1941 accepted as Bankia Gray, 1842
- Genus Nausitora E. P. Wright, 1864 (8)
- Subgenus Nausitora (Inequarista) Iredale, 1932 accepted as Nausitora E. P. Wright, 1864
- Species Nausitora aurita Hedley, 1899
- Species Nausitora burtini (Nyst, 1845) †
- Species Nausitora dryas (Dall, 1909)
- Species Nausitora dunlopei E. P. Wright, 1864
- Species Nausitora excolpa (Bartsch, 1922)
- Species Nausitora fusticulus (Jeffreys, 1860)
- Species Nausitora hedleyi Schepman, 1919
- Species Nausitora kamiyai Roch, 1929 accepted as Bankia carinata (J. E. Gray, 1827)
- Species Nausitora lanceolata Rajagopal, 1964
- Species Nausitora madagassica Roch, 1935 accepted as Nausitora dunlopei E. P. Wright, 1864
- Species Nausitora messeli Iredale, 1932 accepted as Nausitora dunlopei E. P. Wright, 1864
- Species Nausitora oahuensis (Edmondson, 1942)
- Species Nausitora orientalis (Roch, 1929) accepted as Bankia carinata (J. E. Gray, 1827)
- Species Nausitora queenslandica Iredale, 1936 accepted as Nausitora dunlopei E. P. Wright, 1864
- Species Nausitora sajnakhaliensis Rajagopal, 1964 accepted as Bankia nordi Moll, 1935
- Species Nausitora saulii E. P. Wright, 1866
- Species Nausitora schneideri Moll, 1935 accepted as Nausitora dunlopei E. P. Wright, 1864
- Genus Nausitorella Moll, 1952 accepted as Nausitora E. P. Wright, 1864
- Genus Nausitoria [sic] accepted as Nausitora E. P. Wright, 1864
- Genus Neobankia Bartsch, 1921 accepted as Bankia Gray, 1842
- Genus Nototeredo Bartsch, 1923 (3)
- Genus Phylloteredo Roch, 1937 accepted as Nototeredo Bartsch, 1923
- Genus Plumulella Clench & R. D. Turner, 1946 accepted as Bankia Gray, 1842
- Genus Spathoteredo Moll, 1928 (2)
- Genus Xylotrya Blainville, 1828 accepted as Bankia Gray, 1842
- Subfamily Kuphinae Tryon, 1862 (3)
- Subfamily Teredininae Rafinesque, 1815 (50)
- Subfamily Xylophaginae Purchon, 1941 † accepted as Xylophagidae Purchon, 1941
- Genus Coleoteredo [sic] accepted as Teredo Linnaeus, 1758
- Genus Eoteredo Bartsch, 1923
- Genus Guetera Gray, 1847 accepted as Guetara J. E. Gray, 1847
- Genus Lithoredo Shipway, Distel & Rosenberg, 2019 (1)
- Genus Nivanteredo Velásquez & Shipway, 2018 (1)
- Genus Tamilokus Shipway, Distel & Rosenberg, 2019 (1)
- Genus Teredina Lamarck, 1818 † (4)
- Genus Teredinopsis T. Fuchs, 1878 †
- Family Xylophagaidae Purchon, 1941 (68)
- Family Xylophagidae Purchon, 1941 accepted as Xylophagaidae Purchon, 1941
- Superfamily Pleuromyoidea Zittel, 1895 † (17)
- Family Aloididae Thiele, 1934 accepted as Corbulidae Lamarck, 1818
- Family Myacidae accepted as Myidae Lamarck, 1809
- Order Sphaeriida (662)
- Order Venerida (2 826)
- Superfamily Cyamioidea G. O. Sars, 1878 (98)
- Superfamily Gaimardioidea Hedley, 1916 accepted as Cyamioidea G. O. Sars, 1878
- Superfamily Galeommatacea accepted as Galeommatoidea J. E. Gray, 1840
- Superfamily Grammysioidea S. A. Miller, 1877 † (90)
- Superfamily Kalenteroidea Marwick, 1953 † (39)
- Superfamily Mactracea accepted as Mactroidea Lamarck, 1809
- Order Anomalodesmacea accepted as Anomalodesmata
- Order Euheterodonta incertae sedis (27)
- Order Pholadomyida represented as Anomalodesmata
- Family Lipanellidae T. M. Sánchez, 2005 † (4)
- Family Rhaetidiidae Dominici & Danise, 2024 † (2)
- Subterclass Heterodonta
- Subterclass Palaeoheterodonta (4 073)
- Superorder Heteroconchia incertae sedis † (1)
- Infraclass Pteriomorphia (6 661)
- Subclass Bivalvia incertae sedis (7)
- Subclass Palaeotaxodonta accepted as Nuculida
- Subclass Paleoheterodonta accepted as Palaeoheterodonta
- Subclass Protobranchia (1 373)
- Infraclass Cryptodonta † (342)
- Class Caudofoveata (143)
- Class Cephalopoda (1 845)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 801)
- 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