Classification of Sheffield and Sumrall 2019
G. †Holocystites Hall 1864
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†Holocystites cylindricus Hall 1861
†Holocystites scutellus Hall 1864
Subph. †Blastozoa Sprinkle 1973
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Superfm. †Asteroblastida Bather 1900
Cl. †Diploporita Müller 1854
Or. †Glyptosphaeritida Bernard 1895
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Fm. †Glyptosphaeritidae Bernard 1895
Fm. †Gomphocystitidae Bassler 1938
G. †Tristomiacystis Sumrall et al. 2009
Superfm. †Sphaeronitida Neumayr 1889