Classification of the family Onychocellidae

Fm. Onychocellidae Jullien 1882
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G. †Aechmella Canu and Bassler 1917
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Aechmella ambigua MacGillivray 1895
Aechmella depressa MacGillivray 1895
Aechmella poluzzii Moissette 1988
Aechmella rangiauriensis Taylor and Gordon 2007
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Cheethamia aktolagayensis Koromyslova et al. 2018
Cheethamia volgaensis Koromyslova and Seltser 2020
G. Chondriovelum Hayward and Thorpe 1988
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Chondriovelum fossilis Gordon and Taylor 1999
G. †Collura
G. †Distefanella Cipolla 1922
G. †Ehrhardina Martha and Taylor 2016
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Ehrhardina pikeae Martha and Taylor 2016
Ehrhardina voigti Martha and Taylor 2016
G. †Euritina
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Euritina denticulata Roemer 1840
G. Floridina Jullien 1881
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Floridina asymmetrica Canu and Bassler 1920
Floridina elegans Gordon and Taylor 2015
Floridina pentagonus Guha and Gopikrishna 2005
G. †Inversaria von Hagenow 1851
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Inversaria gondwanae Gordon and Taylor 1999
G. †Ogiva Jullien 1881
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Ogiva concamerata Waters 1881
Ogiva ellinorvoigtae Martha et al. 2015
Ogiva elongata Canu and Bassler 1935
Ogiva incompta Gordon and Taylor 1999
Ogiva promonturiorum Voigt 1924
G. Onychocella Jullien 1882
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Onychocella cyclostoma Goldfuss 1826
Onychocella depressa von Hagenow 1851
Onychocella lamellosa Gordon and Taylor 1999
Onychocella michaudiana d'Orbigny 1850
Onychocella reussi Prantl 1938
Onychocella spinifera Voigt 1981
Onychocella subtriangulata Gordon and Taylor 2015
Onychocella torquata Guha and Gopikrishna 2005
Invalid names: Reptocelleporaria D'Orbigny [synonym]
G. †Reptolunulites d'Orbigny 1852
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Rhagasostoma angliae Brydone 1936
Rhagasostoma aralense Koromyslova et al. 2018
Rhagasostoma brydonei Koromyslova et al. 2018
Rhagasostoma gibbosulum Brydone 1936
Rhagasostoma gibbosum Marsson 1887
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Invalid names: Rhagasostoma gibbosum weybournensis Brydone 1930 [synonym], Rhagasostoma subgibbosum Brydone 1930 [synonym]
Rhagasostoma inelegans Lonsdale 1850
Rhagasostoma mimosa Brydone 1930
Rhagasostoma minuens Brydone 1936
Rhagasostoma operculatum Koromyslova et al. 2018
Rhagasostoma rowei Brydone 1906
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Invalid names: Eschara volgensis Eichwald 1865 [synonym]
Rhagasostoma saltans Brydone 1930
Rhagasostoma tchvanovi Favorskaya 1992
G. †Rhebasia
G. Smittipora Jullien 1882
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Invalid names: Diplopholeous [synonym], Rectonychocella [synonym], Velumella [synonym]