Echinoidea - Cidaroida

Parent taxon: Cidaroida according to J. J. Sepkoski 2002

Sister taxa: Cidaridea, Delocidaris, Diplocidaridae, Dorocidaris, Fellius, Hirudocidaris, Histocidaridea, Leurocidaris, Menocidaris, Mesodiadema, Mikrocidari, Minicidaris, Miocidaridae, Nenoticidaridae, Oedematocidaris, Palmerius, Polycidaridae, Prophyllacanthus, Rhabdocidaridae, Serpianotiaridae, Triadotiaridae

Subtaxa: none

Ecology: slow-moving low-level epifaunal grazer-omnivore