Cidarites Lamarck 1816 (sea urchin)
Parent taxon: Echinoidea according to Munster 1826
Sister taxa: Acrosalenioida, Archaeocidaridae, Bromidechinus, Cassiduloidea, Cidaroidea, Diplocidaroida, Disasteroida, Dysaster, Echinocrinus, Echinoida, Euechinoidea, Gnathostomata, Hemicidaroidea, Oligopygoida, Parechinus, Perischoechinoidea, Radiolus, Regularia, Temnopleuroida
Subtaxa: none
Ecology: epifaunal grazer-deposit feeder