†suborder Isorophina Bell 1976

Edrioasteroidea - Isorophina

Parent taxon: Edrioasteroidea according to C. D. Sumrall and S. Zamora 2011

Sister taxa: Aragocystites, Cyathocystida, Cyathothecidae, Edrioasterida, Edrioblastoida, Hemicystitidae, Isorophida, Isorophinidae, Kailidiscus, Pyrgocystidae, Stromatocystitida, Stromatocystitidae

Subtaxa: Isorophidae

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Ecology: stationary low-level epifaunal suspension feeder

Distribution:

• Ordovician of Canada (2: Ontario collections), Morocco (4), United States (11: Illinois, Kentucky, Ohio)

Total: 17 collections including 18 occurrences

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