†subfamily Hippocystinae Chauvel 1966
Sphaeronitida - Aristocystitidae
Full reference: J. Chauvel. 1966. Echinodermes de L'Ordovicien du Maroc: Cahiers de paleontologies. Editions du Centre Natcional de la Recherche Scientifique 1-120
Parent taxon: Aristocystitidae according to J. Chauvel 1966
Sister taxa: Amphoracystis, Aristocystites, Aristocystitinae, Baculocystites, Calicinae, Calix, Campylostoma, Glaphocystis, Pachycalix, Prokopius, Pseudaristocystis, Sinocystis, Triamara
Subtaxa: none
Type: Hippocystis
Ecology: stationary epifaunal suspension feeder
Distribution: there are no occurrences of Hippocystinae in the database