Edrioasteroidea - Yorkicystitidae

Full reference: S. Zamora, I. A. Rahman, C. D. Sumrall, A. P. Gibson, and J. R. Thompson. 2022. Cambrian edrioasteroid reveals new mechanism for secondary reduction of the skeleton in echinoderms. Proceedings of the Royal Society B 289:20212733

Parent taxon: Edrioasteroidea according to S. Zamora et al. 2022

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

Subtaxa: Yorkicystis

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Ecology: stationary low-level epifaunal suspension feeder

Distribution: found only at City View Church (Cambrian of Pennsylvania)

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