Echinoidea - Cidaroidea

Parent taxon: Echinoidea according to A. Kroh and A. B. Smith 2010

Sister taxa: Acrosalenioida, Archaeocidaridae, Bromidechinus, Cassiduloidea, Cidarites, Diplocidaroida, Disasteroida, Dysaster, Echinocrinus, Echinoida, Euechinoidea, Gnathostomata, Hemicidaroidea, Oligopygoida, Parechinus, Perischoechinoidea, Radiolus, Regularia, Temnopleuroida

Subtaxa: Cidaroida

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Ecology: epifaunal grazer-deposit feeder