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Mollusca (132 851)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 013)
Subclass Autobranchia (23 299)
Infraclass Heteroconchia (16 639)
Subterclass Archiheterodonta (1 208)
Subterclass Euheterodonta (11 358)
Superorder Anomalodesmata (987)
Superorder Imparidentia (10 338)
Order Adapedonta (262)
Order Cardiida (3 055)
Order Galeommatida (791)
Order Gastrochaenida (43)
Order Hiatellida represented as Adapedonta
Order Hippuritida † (321)
Order Lucinida (997)
Order Megalodontida † (141)
Order Modiomorphida † (94)
Order Myacea accepted as Myida
Order Myida (924)
Order Sphaeriida (662)
Order Venerida (2 821)
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)
Family Kalenteridae Marwick, 1953 † (39)
Subfamily Healeyinae Hautman, 2008 † (2)
Subfamily Kalenterinae Marwick, 1953 † (3)
Subfamily Myoconchinae Newell, 1957 † (10)
Genus Myoconcha J. De C. Sowerby, 1824 † (6)
Subgenus Myoconcha (Modiolina) J. Müller, 1851 † represented as Myoconcha J. De C. Sowerby, 1824 †
Species Myoconcha (Modiolina) decorata (Münster, 1837) † represented as Myoconcha decorata (Münster, 1837) †
Species Myoconcha angulata A. d'Orbigny, 1844 †
Species Myoconcha busattae Dominici & Danise, 2024 †
Species Myoconcha complanata Étallon, 1863 †
Species Myoconcha concentrisculpta Kuhn, 1936 † accepted as Myoconcha francojurensis Kuhn, 1935 †
Species Myoconcha crassa J. De C. Sowerby, 1824 †
Species Myoconcha cretacea A. d'Orbigny, 1844 †
Species Myoconcha decliva C. A. White, 1887 †
Species Myoconcha decorata (Münster, 1837) †
Species Myoconcha delta R. Casey, 1961 †
Species Myoconcha elongata J. Morris & Lycett, 1853 †
Species Myoconcha francojurensis Kuhn, 1935 †
Species Myoconcha laevis E. Philippi, 1898 †
Species Myoconcha perlonga Étallon, 1863 †
Species Myoconcha quadricosta Kuhn, 1936 † accepted as Myoconcha francojurensis Kuhn, 1935 †
Species Myoconcha sabaudiana de Loriol, 1861 †
Species Myoconcha scabra Terquem & Piette, 1865 †
Species Myoconcha subpinguis Étallon, 1862 †
Species Myoconcha trautscholdi Boden, 1911 †
Species Myoconcha woehrmanni L. Waagen, 1907 †
Genus Netschajewia Likharev, 1925 † (4)
Genus Astafia Goncharova, 2013 † accepted as Netschajewia Likharev, 1925 †
Genus Caspiconcha S. R. A. Kelly, 2000 † (7)
Genus Modiolina J. Müller, 1851 † accepted as Myoconcha (Modiolina) J. Müller, 1851 †
Genus Ouamouia H. J. Campbell, 1984 † (1)
Genus Patagocardia Doello-Jurado, 1946 † (1)
Genus Permophorus Chavan, 1954 † (8)
Genus Pleurophorella Girty, 1904 †
Genus Pleurophorina Likharev, 1925 † (1)
Genus Pleurophorus W. King, 1844 † accepted as Permophorus Chavan, 1954 †
Genus Pseudopermophorus Ciriacks, 1963 † (1)
Genus Pseudophopsis Kiel, Hybertsen, Hyžný & Klompmaker, 2019 † (2)
Genus Stutchburia Etheridge, 1900 † (2)
Genus Triaphorus Marwick, 1953 † (1)
Family Permophoridae van de Poel, 1959 † accepted as Kalenteridae Marwick, 1953 †
Family Pleurophoridae Dall, 1895 † accepted as Kalenteridae Marwick, 1953 †
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 (4 072)
Superorder Heteroconchia incertae sedis † (1)
Infraclass Pteriomorphia (6 660)
Subclass Bivalvia incertae sedis (7)
Subclass Palaeotaxodonta accepted as Nuculida
Subclass Paleoheterodonta accepted as Palaeoheterodonta
Subclass Protobranchia (1 365)
Infraclass Cryptodonta † (342)
Class Caudofoveata (143)
Class Cephalopoda (1 834)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (102 753)
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