†order Diplocidaroida Vadet 1988 (sea urchin)
Parent taxon: Echinoidea according to A. Vadet et al. 2002
Sister taxa: Acrosalenioida, Archaeocidaridae, Bromidechinus, Cassiduloidea, Cidarites, Cidaroidea, Disasteroida, Dysaster, Echinocrinus, Echinoida, Euechinoidea, Gnathostomata, Hemicidaroidea, Oligopygoida, Parechinus, Perischoechinoidea, Radiolus, Regularia, Temnopleuroida
Subtaxa: none
Ecology: epifaunal grazer-deposit feeder