Classification of Kalashnikov 1981

G. Lingula Bruguiére 1797
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†Lingula freboldi Gobbett 1963
G. †Orbiculoidea d'Orbigny 1847
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†Orbiculoidea linguliformis Kalashnikov 1981
G. †Arctochonetes Ifanova 1968
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G. †Megousia Muir-Wood and Cooper 1960
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†Megousia weyprechti Toula 1873
G. †Spitzbergenia Kotljar 1977
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†Spitzbergenia alferovi Miloradovich 1936
G. †Tornquistia Paeckelmann 1930
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†Tornquistia novosemliaensis Likharev 1939
G. †Rhynchopora King 1865
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†Rhynchopora geinitziana de Verneuil 1845
G. †Attenuatella Stehli 1954
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†Attenuatella stringocephaloides Tschernyschew and Licharew 1939
G. †Elivina Fredericks 1924
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†Elivina tibetana Diener 1897
G. †Hustedia Hall and Clarke 1893
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†Hustedia borealis Kalashnikov 1981
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†Kitakamithyris magna Miloradovich 1936
G. †Pseudosyringothyris Fredericks 1916
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†Pseudosyringothyris ustritskyi Kalashnikov 1981