Parent taxon: Echinodermata according to R. K. Bambach et al. 2007

Sister taxa: Arkarua, Asterozoa, Blastoidea, Blastozoa, Camptostromoidea, Coronata, Crinoidea, Ctenocystoidea, Ctenoimbricata, Cyclocystoidea, Diploporita, Discoidea, Echinoconus, Echinozoa, Edrioasteroidea, Eleutherozoa, Graciacystis, Helicoplacoidea, Holothuroidea, Homoiostelea, Homostelea, Iheringiana, Macrocystellidae, Parablastoidea, Paracrinoidea, Pediculacaudinidae, Pelmatozoa, Peripneustes, Rhombifera, Scoteinocystis, Scutellidae, Scutellinidae, Semperitidae, Stylophora, Tubocaudinidae

Subtaxa: Glyptocystitida

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Ecology: stationary low-level epifaunal suspension feeder