Classification of Frest et al. 2011

G. †Holocystites Hall 1864
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Subg. †Holocystites (Sepulticystis) Frest et al. 2011
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Trematocystis magniporatus Frest et al. 2011
G. †Pustulocystis Paul 1971
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Pustulocystis pentax Paul 1971
Fm. †Holocystitidae Miller 1889
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Invalid names: Trematocystinae Frest and Strimple 2011 [empty]
G. †Pentacystis Paul 1971
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Pentacystis gibsoni Frest et al. 2011