Classification of Kafanov et al. 2001
G. Megayoldia Verrill and Bush 1897
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Subg. †Megayoldia (Portlandella) Stewart 1930
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†Megayoldia (Portlandella) nitida Brocchi 1814
†Megayoldia (Portlandella) pilvoensis Slodkewitsch 1938
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Invalid names: Yoldia obtusata Kristofovich 1984 [synonym]
†Megayoldia (Portlandella) watasei Kanehara 1937
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Invalid names: Yoldia deformis Kogan 1939 [synonym]
G. Yoldia Möller 1842
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Subg. †Yoldia (Nampiella) Kafanov and Savizky 1995
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†Yoldia (Nampiella) laudabilis Yokoyama 1924
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Invalid names: Yoldia elliptica Kristofovich 1984 [synonym]
†Yoldia (Nampiella) takaradaiensis Kristofovich 1957
†Yoldia (Nampiella) tigilensis Slodkewitsch 1938
Subg. †Yoldia (Sachalinella) Savitskii 1969
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†Yoldia (Sachalinella) matschigarica Kristofovich 1964
†Yoldia (Sachalinella) nairoensis Evseev 1964
†Yoldia (Sachalinella) vasiljevskii Slodkewitsch 1938
G. Mytilus Linnaeus 1758
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Subg. Mytilus (Tumidimytilus) Kafanov 1984
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†Mytilus (Tumidimytilus) addicotti Kafanov 1985
†Mytilus (Tumidimytilus) chejsleveemensis Slodkewitsch 1938
†Mytilus (Tumidimytilus) ochotensis Slodkewitsch 1936
†Mytilus (Tumidimytilus) tichanovitchi Makiyama 1934
G. Chlamys Röding 1798
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†Chlamys kumanodoensis Masuda 1953
†Chlamys matchgarensis Makiyama 1934
Chlamys tamurae Masuda and Sawada 1961
G. Laevicardium Swainson 1840
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†Laevicardium tristiculum Yokoyama 1924
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Invalid names: Laevicardium esutoruensis Krishtofovich 1957 [synonym]
G. Corbula Bruguière 1789
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Subg. †Corbula (Cuneocorbula) Cossmann 1886
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†Corbula (Cuneocorbula) formosa Devjatilova and Volobueva 1981
G. Mya Linnaeus 1758
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†Mya majanatschensis Ilyina 1963
†Mya tigilensis Kristofovich 1947
Fm. Mytilidae Rafinesque 1815 [mussel]
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Subg. Chlamys (Chlamys) Roding 1798
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†Chlamys (Chlamys) albida Arnold 1906
†Chlamys (Chlamys) arakawai Nomura 1935
†Chlamys (Chlamys) behringiana Middendorff 1849
†Chlamys (Chlamys) cosibensis Yokoyama 1911
†Chlamys (Chlamys) ermanensis Sinelnikova 1975
†Chlamys (Chlamys) etolonensis Sinelnikova 1990
†Chlamys (Chlamys) gackhense Kristofovich and Ilyina 1963
Chlamys (Chlamys) hastata Sowerby 1842
†Chlamys (Chlamys) iljinensis Sinelnikova 1990
†Chlamys (Chlamys) iwriensis Sinelnikova 1990
†Chlamys (Chlamys) jordani Arnold 1903
†Chlamys (Chlamys) karaginskiensis Sinelnikova 1975
†Chlamys (Chlamys) kavranensis Sinelnikova 1975
†Chlamys (Chlamys) miyatokoensis Nomura and Hatai 1937
†Chlamys (Chlamys) otukae Masuda and Sawada 1961
†Chlamys (Chlamys) pseudohastata Sinelnikova 1975
†Chlamys (Chlamys) pseudolioica Sinelnikova 1975
†Chlamys (Chlamys) rendoi Ozaki 1958
†Chlamys (Chlamys) sendaiensis Masuda 1962
†Chlamys (Chlamys) wajampolkensis Sinelnikova 1984
Subg. Yoldia (Yoldia) Moeller 1842
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†Yoldia (Yoldia) rostriformis Gladenkov 1984
†Yoldia (Yoldia) vengeriana Kristofovich 1959
Subg. Yoldia (Cnesterium) Dall 1898
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†Yoldia (Cnesterium) ermanensis Gladenkov 1976
†Yoldia (Cnesterium) rekinnensis Sinelnikova 1990
Yoldia (Cnesterium) seminuda Dall 1871
†Yoldia (Cnesterium) supraoregona Khomenko 1931
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Invalid names: Yoldia subalta Kristofovich 1984 [synonym]
Subg. †Venericardia (Venericor) Stewart 1930
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†Venericardia (Venericor) venturensis Waring 1917
Subg. Arca (Arca) Linnaeus 1758
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†Arca (Arca) sakamizuensis Hatai and Nisiyama 1952
Subg. Mya (Mya) Linnaeus 1758
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Mya (Mya) truncata Linnaeus 1758
Mya (Mya) uzenensis Nomura and Zinbo 1937
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Invalid names: Mya (Mya) pseudoarenaria Schlesch 1931 [synonym]
Subg. Mya (Arenomya) Winkworth 1930
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†Mya (Arenomya) grewingki Makiyama 1934
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Invalid names: Mya kusiroensis Nagao and Inoue 1941 [synonym]
†Mya (Arenomya) marujamensis Zhidkova 1994
†Mya (Arenomya) profundior Grant and Gale 1931
Subg. Chlamys (Leochlamys) MacNeil 1967
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†Chlamys (Leochlamys) iwakiana Yokoyama 1925
†Chlamys (Leochlamys) tanassevitschi Khomenko 1934
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Invalid names: Chlamys (Leochlamys) daishakaensis Masuda and Sawada 1961 [synonym]
Subg. Chlamys (Mimachlamys) Iredale 1929
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†Chlamys (Mimachlamys) kaneharai Yokoyama 1926
†Chlamys (Mimachlamys) meisensis Makiyama 1926
Subg. Megayoldia (Megayoldia) Verrill and Bush 1897
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†Megayoldia (Megayoldia) thraciaeformis Storer 1838
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Invalid names: Yoldia scapha Yokoyama 1926 [synonym], Yoldia suavis Konova 1984 [synonym]