Superfamily Cidaridea Gray 1825 (pencil urchin)
Parent taxon: Cidaroida according to A. B. Smith 2015
See also Kroh and Smith 2010
Sister taxa: Delocidaris, Diplocidaridae, Fellius, Heterocidaridae, Hirudocidaris, Histocidaridea, Leurocidaris, Menocidaris, Mesodiadema, Mikrocidari, Minicidaris, Miocidaridae, Oedematocidaris, Palmerius, Paracidaridae, Polycidaridae, Prophyllacanthus, Rhabdocidaridae, Serpianotiaridae, Triadotiaridae
Subtaxa: Cidaridae Ctenocidaridae Paurocidaris Plegiocidaris Psychocidaridae
Ecology: slow-moving low-level epifaunal grazer-omnivore