Classification of Muromtseva and Guskov 1984
G. Nuculana Link 1807
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†Nuculana flexuosa Lutkevitch and Lobanova 1960
†Nuculana kasanensis de Verneuil 1845
†Nuculana lunulata Dembskaya 1972
†Nuculana magna Lea 1833
†Nuculana sinuata Dembskaja 1972
G. †Nuculopsis Girty 1912
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†Nuculopsis beyrichi von Schauroth 1854
†Nuculopsis cornutus Dembskaja 1972
†Nuculopsis salebrosus Dembskaja 1972
†Nuculopsis trivialis Eichwald 1860
†Nuculopsis wymmensis Keyserling 1846
G. †Palaeoneilo Hall and Whitfield 1869
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†Palaeoneilo arctica Muromtseva 1981
†Palaeoneilo artiensis Stuckenberg 1898
†Palaeoneilo magna Tschernyschew 1947
G. †Parallelodon Meek and Worthen 1866
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†Parallelodon striatus von Schlotheim 1816
G. Lithophaga Röding 1798
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†Lithophaga consobrina Eichwald 1861
†Lithophaga gigantea Stuckenberg 1898
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Invalid names: Paychoya sicaria Lutkevich and Lobanova 1956 [synonym]
Invalid names: Paychoya Lutkevich and Lobanova 1956 [synonym]
G. †Promytilus Newell 1942
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G. †Annuliconcha Newell 1938
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†Annuliconcha interlineata Meek and Worthen 1860
†Annuliconcha placunensis Nelsina and Koschman 1958
†Annuliconcha volgensis Stuckenberg 1905
G. †Atomodesma Beyrich 1865
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†Atomodesma costata Popov 1958
†Atomodesma lenaensis Voronetz 1936
†Atomodesma minima Muromtseva 1984
†Atomodesma permica Newell 1955
†Atomodesma pogorevitschi Muromtseva and Guskov 1984
†Atomodesma turgida Popov 1958
†Atomodesma variabilis Wanner 1922
G. †Aviculopecten M'Coy 1851
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†Aviculopecten artiensis Krotow 1885
†Aviculopecten frederixi Lutkevitch and Lobanova 1960
†Aviculopecten keyserlingiformis Licharew 1927
†Aviculopecten mutabilis Licharew 1927
†Aviculopecten orientalis Fredericks 1934
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Invalid names: Aviculopecten sojanensis Kulikov 1967 [synonym], Aviculopecten stepanovi Kulikov 1967 [synonym], Streblochondria kulojensis Kulikov 1967 [synonym]
†Aviculopecten rossiensis Netschajew 1894
†Aviculopecten sexcostatus Stuckenberg 1898
†Aviculopecten uralicus Fredericks 1915
G. †Bakevellia King 1848
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†Bakevellia nikitowkensis Yakovlev 1903
†Bakewellia bicarinata King 1848
G. †Kolymia
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†Kolymia inoceramiformis Licharew 1941
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Invalid names: Kolymia irregularis Licharew 1941 [synonym]
†Kolymia nikolaewi Voronets 1936
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Invalid names: Kolymia lenaensis Popow 1957 [synonym], Parainoceramus bulkuriensis Voronetz 1936 [synonym]
†Kolymia pterinaeformis Popov 1958
†Kolymia pterineaeformis Popov 1958
†Kolymia verchojanica Lutkevitch and Lobanova 1960
G. †Morrisipecten Muromtseva and Guskov 1984
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†Morrisipecten fittoni Morris 1845
†Morrisipecten keyserlingi Stuckenberg 1875
G. †Palaeolima Hind 1903
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†Palaeolima kasanensis Netschajew 1894
†Palaeolima krotowi Stuckenberg 1898
†Palaeolima laticostata Tschernyschew 1902
G. †Pseudomonotis von Beyrich 1862
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Invalid names: Aviculomonotis Grabau 1931 [synonym]
G. †Pterinopecten Hall 1883
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†Pterinopecten pseudoradiatus Fredericks 1915
†Pterinopecten serdobowae Fredericks 1915
G. †Streblopteria McCoy 1851
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†Streblopteria eichwaldi Stuckenberg 1898
†Streblopteria elliptica Phillips 1836
†Streblopteria englehardti Etheridge and Dun 1906
†Streblopteria levis Lutkevitch and Lobanova 1960
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Invalid names: Pecten longus Lutkevitch and Lobanova 1960 [synonym], Pecten rotundus Lutkevitch and Lobanova 1960 [synonym]
†Streblopteria pusilla von Schlotheim 1816
†Streblopteria radiata Lutkevitch and Lobanova 1960
G. †Vnigripecten Muromtseva 1984
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†Vnigripecten phosphaticus Girty 1910
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Invalid names: Aviculopecten kolymaensis Maslennikow 1959 [synonym], Aviculopecten volucer Lutkevitch and Lobanova 1960 [synonym]
G. †Vorkutopecten Guskov 1984
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†Vorkutopecten netschajewi Licharew 1927
†Vorkutopecten subclathratus Keyserling 1846
†Vorkutopecten talis Lutkevitch and Lobanova 1960
G. †Schizodus King 1844
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†Schizodus affinis Herrick 1887
†Schizodus rossicus de Verneuil 1845
†Schizodus rotundatus Brown 1839
†Schizodus schlotheimi Geinitz 1841
†Schizodus subobscurus Licharew 1933
†Schizodus texanus Clifton 1942
†Schizodus truncatus King 1844
G. †Astartella Hall 1858
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†Astartella multicostata Dembskaja 1972
†Astartella permocarbonica Tschernyschew 1885
†Astartella raricostata Dembskaja 1972
†Astartella subquadrata Girty 1909
G. †Oriocrassatella Etheridge Jr. 1907
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†Oriocrassatella elongata Boyd and Newell 1968
†Oriocrassatella plana Golowinsky 1869
Subg. †Prothyris (Prothyris) Meek 1871
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†Prothyris (Prothyris) cilindricus Muromtseva and Guskov 1984
G. †Ragozinia Muromtseva 1984
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†Ragozinia dembskajae Muromtseva and Guskov 1984
†Ragozinia gorskyi Astafieva-Urbajtis 1976
G. †Stutchburia Etheridge 1900
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†Stutchburia modioliformis King 1844
†Stutchburia oblonga Golowinsky 1869
†Stutchburia pallasi de Verneuil 1845
†Stutchburia tschernyschewi Licharew 1933
G. †Edmondia de Koninck 1841
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†Edmondia grandis Stuckenberg 1905
†Edmondia nebrascensis Geinitz 1866
†Edmondia netschajewi Muromtseva 1981
G. †Permophorus Chavan 1954
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†Permophorus angustus Muromtseva 1981
†Permophorus costatus Brown 1839
†Permophorus oblongus Meek and Hayden 1872
G. †Praeundulomya Dickins 1957
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†Praeundulomya concentrica Dickins 1957
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Invalid names: Grammysiopsis ursovi Muromtseva 1974 [synonym]
†Praeundulomya elongata Dickins 1957
†Praeundulomya gijigensis Maslennikow 1959
†Praeundulomya petschorica Muromtseva and Guskov 1981
G. †Pyramus Dana 1847
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†Pyramus permianus Lutkevitch and Lobanova 1960
†Pyramus simmetricus Lutkevitch and Lobanova 1960
G. †Sanguinolites M'Coy 1844
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†Sanguinolites costatus Morris 1845
†Sanguinolites lukjanovae Muromtseva 1984
G. †Vacunella Waterhouse 1965
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†Vacunella curvata Morris 1845
†Vacunella dawsonensis Runnegar 1967
†Vacunella etheridgei de Koninck 1877
†Vacunella novosemelica Muromtseva 1981
†Vacunella similis Lutkevitch and Lobanova 1960
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Invalid names: Allorisma ordis Lutkevitch and Lobanova 1960 [synonym], Allorisma umbonata Lutkevitch and Lobanova 1960 [synonym]
G. †Wilkingia Wilson 1959
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†Wilkingia elegans King 1844
†Wilkingia verchojanica Murontseva 1974
Fm. †Pterineidae Miller 1877
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G. †Pseudobakewellia Noinsky 1913
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†Pseudobakewellia antiquaeformis Noinsky 1913
†Pseudobakewellia ceratophagaeformis Noinskyi 1913
Fm. Solemyidae Adams and Adams 1857 [Awning Clam]
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Subg. †Pseudomonotis (Pseudomonotis) Beyrich 1862
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†Pseudomonotis (Pseudomonotis) permianus Maslennikov 1935
†Pseudomonotis (Pseudomonotis) speluncaria von Schlotheim 1816
Subg. †Pseudomonotis (Trematiconcha) Newell and Boyd 1970
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†Pseudomonotis (Trematiconcha) garforthensis King 1850
G. †Palaeocosmomya Fletcher 1946
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†Palaeocosmomya kazanensis Geinitz 1880
†Palaeocosmomya kochi Newell 1955
Subg. †Solemya (Janeia) King 1850
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†Solemya (Janeia) biarmica de Verneuil 1845
†Solemya (Janeia) kasanensis Netschajew 1894
†Solemya (Janeia) normalis Howse 1848
†Solemya (Janeia) solikamica Muromtseva 1981
Subg. †Myonia (Myonia) Dana 1847
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†Myonia (Myonia) carinata Morris 1845
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Invalid names: Myonia (Myonia) bulkurensis Astafieva-Urbajtis 1976 [synonym], Myonia (Myonia) sulcatiformis Astafieva-Urbaitis 1976 [synonym], Myonia (Pachymyonia) bytantajensis Astafieva-Urbaitis 1976 [synonym], Myonia (Pachymyonia) longa Astafieva-Urbaitis 1976 [synonym], Myonia (Pachymyonia) lutkevitchi Astafieva-Urbaitis 1976 [synonym], Thracia alta Lutkevitch and Lobanova 1960 [synonym], Thracia longa Lutkevitch and Lobanova 1960 [synonym]
†Myonia (Myonia) gibbosa Maslennikow 1959
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Invalid names: Sanguinolites sibirica Kulikov 1967 [synonym]
†Myonia (Myonia) komiensis Maslennikov 1935
†Myonia (Myonia) subarbitrata Dickins 1963
†Pseudomonotis garforthensis King 1850
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Invalid names: Prospondylus noinskyi Licharew 1931 [synonym]
Subg. †Myonia (Pachymyonia) Dun 1932
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†Myonia (Pachymyonia) elata Popow 1957
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Invalid names: Myonia (Pachymyonia) bicarinata Astafieva-Urbaitis 1976 [synonym]
Subg. †Leptodesma (Leiopteria) Hall 1883
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†Leptodesma (Leiopteria) aviculaeformis Stuckenberg 1898
Subg. †Prothyris (Amphikoilum) Novojilov 1956
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†Prothyris (Amphikoilum) bilobata Pogorevitsch 1975