Edrioasteroidea - Isorophida - Agelacrinitidae

Parent taxon: Agelacrinitidae according to C. D. Sumrall et al. 2006

Sister taxa: Agelacrinites, Cooperidiscus, Discocystinae, Discocystis, Isorophus, Isorophusella, Lepidodiscus, Neoisorophusella, Postibullinae, Thresherodiscus, Ulrichidiscus

Subtaxa: Postibulla westergaardi

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Ecology: stationary low-level epifaunal suspension feeder