Classification of Ernst 2000
Fm. †Hexagonellidae Crockford 1947
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Or. †Rhabdomesida Vine 1883
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Subor. †Rhabdomesina Astrova and Morozova 1956
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Invalid names: Streblotrypidae Ulrich 1890 [empty]
Or. †Fenestrida Elias and Condra 1957
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Subor. †Fenestellina Astrova and Morozova 1956
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Fm. †Fenestellidae King 1850
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Subfm. †Fenestellinae King 1849
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G. †Alternifenestella Termier and Termier 1971
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†Alternifenestella nalivkini Elias and Condra 1957
†Alternifenestella subquadratopora Schulga-Nesterenko 1952
†Alternifenestella tenuiseptata Schulga-Nesterenko 1941
†Alternifenestella tuberculifera Schulga-Nesterenko 1952