Echinoidea - Perischoechinoidea

Parent taxon: Echinocystitoida according to P. M. Kier 1966

Sister taxa: Aptilechinus, Cavanechinus, Devonocidaris, Echinocyctitidae, Echinocystitidae, Fournierechinus, Ledidocidaris, Lepidesthidae

Subtaxa: none

Ecology: slow-moving low-level epifaunal detritivore