Classification of Asano 1949

Fm. Nodosariidae Ehrenberg 1838
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G. Lenticulina Lamarck 1804
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G. Saracenaria Defrance 1824
Fm. †Nonionidae Schultze 1854
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G. Elphidium Monfort 1808
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†Elphidium asagaiense Asano 1949
†Elphidium yumotoense Asano 1949
G. †Faujasina d'Orbigny 1839
G. Nonion Monfort 1808
Fm. Lituolidae de Blainville 1825
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G. Cyclammina Brady 1876
Fm. Rotaliidae Ehrenberg 1839
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G. Cibicides Monfort 1808
Fm. Trochamminidae Schwager 1877
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G. Ammobaculites Cushman 1910
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G. Trochammina Parker and Jones 1859
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†Trochammina asagiensis Asano 1949