†family Achradocystitidae Stukalina and Hintz 1989
Paracrinoidea - Comarocystitida - Achradocystitidae
Parent taxon: Comarocystitida according to S. V. Rozhnov 2017
Sister taxa: Amygdalocystitidae, Comarocystitidae, Ovulocystites
Subtaxa: Achradocystites
Ecology: stationary epifaunal suspension feeder
Distribution:
• Ordovician of Estonia (8 collections)
Total: 8 collections each including a single occurrence