Eocrinoidea - Rhipidocystidae

Full reference: S. Zamora, J. Sprinkle, and C. D. Sumrall. 2020. A revaluation of rhipidocystid echinoderms based on a new flattened blastozoan from the Upper Ordovician of Maryland, USA. Acta Palaeontologica Polonica 65

Parent taxon: Rhipidocystidae according to S. Zamora et al. 2020

Sister taxa: Batherocystis, Mandalocystis, Petalocystites, Rhipidocystis

Subtaxa: Durhamicystis americana

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Type: Durhamicystis americana

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Schemeompf’s old Quarry, top of a hill, west of Conococheague Creek (Ordovician of Maryland)

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Specimen images are retrieved through the ePANDDA API.