Classification of Ernst et al. 2019

Or. †Cyclostomata Busk 1852
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Fm. †Diploclemidae Gorjunova 1992
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G. †Diploclema Ulrich 1889
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Diploclema argutum Bassler 1906
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Invalid names: Diploclema regulariforme Kopajevich 1971 [synonym]
Or. †Cystoporata Astrova 1964
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Fm. †Xenotrypidae Utgaard 1983
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Hennigopora apta Perry and Hattin 1960
G. †Hallopora Bassler 1911
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Hallopora elegantula Hall 1851
Subor. †Halloporina Astrova 1965
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Fm. †Halloporidae Bassler 1911
G. †Leioclema Ulrich 1882
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Leioclema adsuetum Bassler 1911
G. †Chasmatopora Eichwald 1860
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Chasmatopora foerstei McKinney and Wyse Jackson 2010
Fm. †Fistuliporidae Ulrich 1882
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G. †Cheilotrypa Ulrich 1884
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Cheilotrypa variolata Hall 1876
Fm. †Arthrostylidae Ulrich 1882
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G. †Moyerella Nekhoroshev 1956
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Moyerella parva Ernst et al. 2019
Fm. †Fenestellidae King 1850
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G. †Fenestella Lonsdale 1839
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Fenestella jupiterensis Bassler 1928
Fm. †Rhinidictyidae Ulrich 1878
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Invalid names: Astreptodictya [synonym]
Fm. †Monticuliporidae Nicholson 1881
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G. †Homotrypa Ulrich 1882
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Homotrypa niagarensis Ernst et al. 2019
Fm. †Ptilodictyidae Zittel 1880
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G. †Phaenopora Hall 1851
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Phaenopora multifida Hall 1883
G. †Ptilodictya Lonsdale 1839
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Ptilodictya sulcata Billings 1866