†order Cyathocystida Bell 1975

Edrioasteroidea - Cyathocystida

Parent taxon: Edrioasteroidea according to J. F. Bockelie and C. R. C. Paul 1983

Sister taxa: Aragocystites, Camptostroma, Cyathothecidae, Edrioasterida, Edrioblastoida, Hemicystitidae, Isorophida, Isorophina, Isorophinidae, Kailidiscus, Pyrgocystidae, Stromatocystitida, Stromatocystitidae, Yorkicystitidae

Subtaxa: Cyathocystidae

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Ecology: stationary low-level epifaunal suspension feeder

Distribution:

• Ordovician of Estonia (1 collection), Norway (2), Sweden (3), United States (7: Missouri, Oklahoma)

Total: 13 collections each including a single occurrence

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