Clade Carinacea Kroh and Smith 2010 (sea urchin)
Full reference: A. Kroh and A. B. Smith. 2010. The phylogeny and classification of post-Palaeozoic echinoids. Journal of Systematic Palaeontology 8(2):147-212
Parent taxon: Acroechinoidea according to A. Kroh and A. B. Smith 2010
Sister taxa: Aspidodiadematoida, Diadematoida, Micropygoida, Nicolleaumatidae, Orthopsida, Pedinoida, Pedinopsidae
Subtaxa: Calycina Hemicidaridae Irregularia Orthopsidae Pseudodiadematidae
Ecology: epifaunal grazer-deposit feeder