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Mollusca (132 888)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 022)
Subclass Autobranchia (23 308)
Infraclass Heteroconchia (16 648)
Subterclass Archiheterodonta (1 208)
Order Actinodontida † (196)
Superfamily Amnigenioidea Khalfin, 1948 † (18)
Superfamily Anodontopsoidea S. A. Miller, 1889 † (40)
Superfamily Nyassoidea S. A. Miller, 1877 † (2)
Superfamily Oriocrassatelloidea Boyd & Newell, 1968 † (4)
Superfamily Palaeomuteloidea Lahusen, 1897 † (132)
Family Palaeomutelidae Lahusen, 1897 † (132)
Genus Amalitzkiella Starobogatov, 1970 † accepted as Oligodontella Gusev, 1963 †
Genus Hinganodon Z.-F. Liang, 1982 † accepted as Palaeomutela Amalitzky, 1891 †
Genus Neonuculites Z.-F. Liang, 1982 †
Genus Oligodon Amalitzky, 1892 accepted as Oligodontella Gusev, 1963 †
Genus Oligodontella Gusev, 1963 † (4)
Genus Palaeanodonta Amalitzky, 1895 † accepted as Palaeomutela (Palaeanodonta) Amalitzky, 1895 †
Genus Palaeomutela Amalitzky, 1891 † (115)
Genus Palaeopleiodon Amalitzky, 1891 † accepted as Palaeomutela Amalitzky, 1891 †
Genus Rectodontia B. I. Chernyshev, 1943 † accepted as Palaeomutela (Palaeomutela) Amalitzky, 1891 †
Genus Salairka Papin, 1996 † (3)
Genus Seyedina Jatsuk, 1987 † (6)
Species Seyedina afflicta Kanev, 1994 †
Species Seyedina antonoviana Betekhtina, 1987 †
Species Seyedina buredanica (Pogorevich, 1977) †
Species Seyedina carinata Betekhtina & Tokareva, 1988 †
Species Seyedina inventa Jatsuk, 1987 †
Species Seyedina savitschevi Jatsuk, 1987 †
Genus Solonodon Z.-F. Liang, 1982 † accepted as Palaeomutela Amalitzky, 1891 †
Genus Tajlugania Papin, 1966 † (3)
Genus Tellenia Betekhtina, 1990 † (1)
Order Carditida (1 011)
Order unranked_Archiheterodonta † (1)
Subterclass Euheterodonta (11 366)
Subterclass Heterodonta
Subterclass Palaeoheterodonta (4 073)
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 (1 838)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (102 777)
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