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)
- Subclass Autobranchia (23 295)
- Infraclass Heteroconchia (16 637)
- Subterclass Archiheterodonta (1 208)
- Subterclass Euheterodonta (11 356)
- Subterclass Heterodonta
- Subterclass Palaeoheterodonta (4 072)
- Order Trigoniida (1 482)
- Superfamily Megatrigonioidea van Hoepen, 1929 † (336)
- Superfamily Myophorelloidea T. Kobayashi, 1954 † (376)
- Superfamily Pseudocardinioidea Martinson, 1961 † (176)
- Family Pseudocardiniidae Martinson, 1961 † (169)
- Genus Acyrena Lebedev, 1958 † (12)
- Genus Angaridella C. M. Kolesnikov, 1980 † (3)
- Genus Apseudocardinia X.-Z. Liu & G.-X. Zhu, 1978 † (26)
- Genus Arkitella Repman, 1963 † (5)
- Genus Carinoconcha C. M. Kolesnikov, 1980 † (3)
- Genus Fengjiachongia S.-B. Wu, 1981 † accepted as Hunanella C.-W. Xiong & S.-Y. Wang, 1979 †
- Genus Fengjiachonia S.-B. Wu, 1981 † accepted as Hunanella C.-W. Xiong & S.-Y. Wang, 1979 †
- Genus Guangdongella Z.-S. Li & Y.-T. Li, 1980 † (4)
- Genus Hamiconcha B.-Y. Huang, J.-M. Wei & J.-H. Chen, 1981 † (3)
- Genus Hubeiconcha P. Wang, 1993 † (7)
- Genus Hunanella C.-W. Xiong & S.-Y. Wang, 1979 † accepted as Lilingella (Hunanella) C.-W. Xiong & S.-Y. Wang, 1979 †
- Genus Indosinion F.-X. Guo & J.-H. Chen, 1985 † (5)
- Genus Jiangxiella L. Liu, 1976 † (8)
- Genus Lilingella J.-H. Chen & L. Liu, 1968 † (15)
- Genus Okribella Kakhadze, 1942 † (3)
- Genus Pseudocardinia Martinson, 1959 † (35)
- Subgenus Pseudocardinia (Pseudocardinia) Martinson, 1959 † represented as Pseudocardinia Martinson, 1959 †
- Species Pseudocardinia altiformis J.-S. Yu, 1987 †
- Species Pseudocardinia angulata C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia asiatica (B. I. Chernyshev, 1937) † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia baichengensis J.-M. Wei, 1984 † accepted as Kija ovalis (Martinson, 1959) †
- Species Pseudocardinia beibeiensis S.-Y. Cai, 1988 †
- Species Pseudocardinia busimensis (Lebedev, 1958) † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia carinata Martinson, 1959 † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia carinatoides C. M. Kolesnikov & Spasskaya, 1961 † accepted as Carinoconcha carinatoides (C. M. Kolesnikov & Spasskaya, 1961) †
- Species Pseudocardinia chongqingensis S.-Y. Cai, 1988 †
- Species Pseudocardinia curta C. M. Kolesnikov & Spasskaya, 1961 †
- Species Pseudocardinia dakangensis (Q.-H. Ma, 1974) †
- Species Pseudocardinia duraica Martinson, 1961 † accepted as Subcardinia duraica (Martinson, 1961) †
- Species Pseudocardinia elliptica C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena elliptica (C. M. Kolesnikov & Spasskaya, 1961) †
- Species Pseudocardinia elongata Martinson, 1959 †
- Species Pseudocardinia elongatiformis (B. I. Chernyshev, 1937) † accepted as Acyrena khadjakalanensis (B. I. Chernyshev, 1937) †
- Species Pseudocardinia ferganensis (B. I. Chernyshev, 1937) † accepted as Acyrena ferganensis (B. I. Chernyshev, 1937) †
- Species Pseudocardinia gansuensis Z.-W. Gu, 1976 † accepted as Neomiodonoides gansuensis (Z.-W. Gu, 1976) †
- Species Pseudocardinia globosa J.-S. Yu, 1987 †
- Species Pseudocardinia hupehensis (Grabau, 1923) † accepted as Corbicula hupehensis (Grabau, 1923) †
- Species Pseudocardinia inflata J.-M. Wei, 1984 †
- Species Pseudocardinia inflata Q.-H. Ma, 1984 †
- Species Pseudocardinia intermedia J.-S. Yu, 1987 †
- Species Pseudocardinia jeniseica (Martinson, 1956) † accepted as Subcardinia jeniseica (Martinson, 1956) †
- Species Pseudocardinia jiuquanica Z.-W. Gu, 1976 † accepted as Neomiodonoides jiuquanicus (Z.-W. Gu, 1976) †
- Species Pseudocardinia kangsuensis J.-M. Wei, 1984 †
- Species Pseudocardinia kezloica J.-M. Wei, 1984 †
- Species Pseudocardinia khadjakalanensis (B. I. Chernyshev, 1937) † accepted as Acyrena khadjakalanensis (B. I. Chernyshev, 1937) †
- Species Pseudocardinia kukebaiensis J.-M. Wei, 1984 † accepted as Acyrena jenissejensis Lebedev, 1958 †
- Species Pseudocardinia kweichouensis (Grabau, 1923) † accepted as Kija kweichouensis (Grabau, 1923) †
- Species Pseudocardinia lacustris C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia lanceolata (Stutchbury, 1842) † accepted as Cardinia lanceolata (Stutchbury, 1842) †
- Species Pseudocardinia latirostra S.-Y. Cai, 1988 †
- Species Pseudocardinia lepida J.-S. Yu, 1987 †
- Species Pseudocardinia longa C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia magna C. M. Kolesnikov & Spasskaya, 1961 † accepted as Repmanigonia magna (C. M. Kolesnikov & Spasskaya, 1961) †
- Species Pseudocardinia menggaensis F.-X. Guo, 1985 †
- Species Pseudocardinia minuta (B. I. Chernyshev, 1937) †
- Species Pseudocardinia mutabilis J.-S. Yu, 1987 †
- Species Pseudocardinia nuculaeformis (B. I. Chernyshev, 1937) † accepted as Acyrena nuculaeformis (B. I. Chernyshev, 1937) †
- Species Pseudocardinia obesa J.-S. Yu, 1987 †
- Species Pseudocardinia obliquata B.-Y. Huang & J.-H. Chen, 1980 †
- Species Pseudocardinia orientalis (X.-Z. Liu & G.-X. Zhu, 1978) †
- Species Pseudocardinia ovalis Martinson, 1959 †
- Species Pseudocardinia parallella J.-S. Yu, 1987 †
- Species Pseudocardinia parallelograma (X.-Z. Liu & G.-X. Zhu, 1978) †
- Species Pseudocardinia praecurta J.-S. Yu, 1987 †
- Species Pseudocardinia robusta J.-S. Yu, 1987 †
- Species Pseudocardinia rotunda C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena turkestanica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia shijialiangensis S.-Y. Cai, 1988 †
- Species Pseudocardinia sibireconchaiformis Q.-H. Ma, 1976 †
- Species Pseudocardinia sibirensis Martinson, 1961 † accepted as Subcardinia sibirensis (Martinson, 1961) †
- Species Pseudocardinia subacuminata (B. I. Chernyshev, 1937) † accepted as Acyrena subacuminata (B. I. Chernyshev, 1937) †
- Species Pseudocardinia subcentralis Z.-W. Gu & Q.-H. Ma, 1976 †
- Species Pseudocardinia submagna Martinson, 1959 †
- Species Pseudocardinia suborbiculata J.-M. Wei, 1984 † accepted as Acyrena tetragonalis Lebedev, 1958 †
- Species Pseudocardinia subtriangulata J.-S. Yu, 1987 †
- Species Pseudocardinia tarimensis J.-M. Wei, 1984 † accepted as Kija ovalis (Martinson, 1959) †
- Species Pseudocardinia tetragonalis (Lebedev, 1958) † accepted as Acyrena tetragonalis Lebedev, 1958 †
- Species Pseudocardinia tongshanensis B.-Y. Huang & J.-H. Chen, 1980 †
- Species Pseudocardinia turfanensis Martinson, 1959 †
- Species Pseudocardinia turkestanica (B. I. Chernyshev, 1937) † accepted as Acyrena turkestanica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia tuvensis Martinson, 1961 † accepted as Acyrena asiatica (B. I. Chernyshev, 1937) †
- Species Pseudocardinia ventricosa C. M. Kolesnikov & Spasskaya, 1961 † accepted as Acyrena tetragonalis Lebedev, 1958 †
- Species Pseudocardinia xietanensis J.-S. Yu, 1987 †
- Species Pseudocardinia xipoensis B.-D. Shi, 1982 † accepted as Acyrena jenissejensis Lebedev, 1958 †
- Species Pseudocardinia yangxiensis Z.-W. Gu, 1976 † accepted as Pseudocardinia yangziensis Z.-W. Gu, 1976 †
- Species Pseudocardinia yangziensis Z.-W. Gu, 1976 † accepted as Acyrena tetragonalis Lebedev, 1958 †
- Species Pseudocardinia yanquensis F.-X. Guo, 1985 †
- Species Pseudocardinia yumenica Z.-W. Gu, 1976 † accepted as Neomiodonoides yumenicus (Z.-W. Gu, 1976) †
- Species Pseudocardinia yutianensis J.-M. Wei, 1984 †
- Species Pseudocardinia zhouyingziensis J.-S. Yu, 1984 †
- Genus Sibireconcha Lebedev, 1958 † (27)
- Genus Sibirinaia Starobogatov, 1970 † (1)
- Genus Subcardinia C. M. Kolesnikov, 1980 † (5)
- Genus Tchulymiconcha Starobogatov, 1970 † (1)
- Genus Weiyuanella J.-F. Xu, 1984 † (5)
- Genus Xinjiangconcha J.-M. Wei, 1984 † accepted as Hamiconcha B.-Y. Huang, J.-M. Wei & J.-H. Chen, 1981 †
- Genus Xinyuella J.-H. Chen & Y.-M. Xu, 1980 † accepted as Lilingella (Xinyuella) J.-H. Chen & Y.-M. Xu, 1980 †
- Genus Zhifangia B.-P. Liu, 1980 † (1)
- Genus Zyrjanoconcha Yakushina, 1983 † accepted as Ferganoconcha Lyutkevich, Nalivkin, Pchelintseva, Savel'yev & Eberzin, 1960 †
- Family Utschamiellidae C. M. Kolesnikov, 1977 † (7)
- Superfamily Trigonioidea Lamarck, 1819 (350)
- Superfamily Trigonioidoidea L. R. Cox, 1952 † (226)
- Superfamily Trigonodoidea Modell, 1942 † (18)
- Order Unionida (2 579)
- Family Lyrodesmatidae P. Fischer, 1886 † (8)
- Family Pseudarcidae Scarlato & Starobogatov, 1979 † (3)
- Family Thoraliidae N. J. Morris, 1980 †
- Superorder Heteroconchia incertae sedis † (1)
- Infraclass Pteriomorphia (6 658)
- 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 (102 697)
- 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