Classification of Nützel et al. 2012

G. †Katosira Koken 1892
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†Katosira lateplicata Klipstein 1843
G. †Protorcula Kittl 1894
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†Protorcula iranica Nützel et al. 2012
Fm. †Coelostylinidae Cossmann 1909
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G. †Coelostylina Kittl 1894
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†Coelostylina conica Münster 1841
Fm. Mathildidae Dall 1889
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G. †Teretrina
Fm. †Procerithiidae Cossmann 1905
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G. †Rhynchocerithium Cossmann 1906
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†Rhynchocerithium douglasi Nützel and Senowbari-Daryan 1999
G. †Carinathilda Gründel 1997
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†Carinathilda textilis Nützel and Senowbari-Daryan 1999
G. †Teutonica Schröder 1992
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†Teutonica natanzensis Nützel et al. 2012
Fm. †Prostyliferidae Bandel 1992
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G. †Acilia Koken 1896
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†Acilia basistriata Nützel et al. 2012