Parent taxon: Edrioasteroidea according to C. D. Sumrall and S. Zamora 2011
See also Sepkoski 2002 and Sumrall 1996
Sister taxa: Aragocystites, Camptostroma, Cyathocystida, Cyathothecidae, Edrioasterida, Edrioblastoida, Hemicystitidae, Isorophina, Isorophinidae, Kailidiscus, Pyrgocystidae, Stromatocystitida, Stromatocystitidae, Yorkicystitidae
Subtaxa: Agelacrinitidae Chatsworthia Cryptogoleus Curvitriordo Deltadiscus Floridiscus Giganticlavus Hadrochthus Hadrodiscus Lebetodiscidae Protorophus Rectitriordo Stalticodiscus
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Permian of the Russian Federation (1 collection)
• Carboniferous of Canada (2: Alberta), United States (7: Alabama, Arizona, Illinois, Oklahoma)
• Devonian of Germany (2), United States (4: Iowa, New York, Ohio)
• Ordovician of Canada (5: Ontario), United States (6: Illinois, Illinois, Iowa, Minnesota)
• Cambrian of Australia (1), Spain (1)
• Solvan of Spain (1)
Total: 30 collections including 38 occurrences