Echinoidea - Cidaroida

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

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

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