Crinoidea - Inadunata - Alphacrinidae

Full reference: T. E. Guensburg. 2010. Alphacrinus New Genus and Origin of the Disparid Clade. Journal of Paleontology 84(6):1209-1216

Parent taxon: Disparida according to T. E. Guensburg 2010

Sister taxa: none

Subtaxa: Alphacrinus

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Ecology: stationary intermediate-level epifaunal suspension feeder

Distribution: found only at Summit of Skull Rock Pass (Ordovician of Utah)

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