Clade Echinacea Claus 1876 (sea urchin)
Alternative spelling: Echinideae
Full reference: C. F. W. Claus. 1876. Grundzüge der Zoologie. 3rd edition. N. G. Elwertsche Universitätsbuchhandlung, Marburg & Leipzig 1-1254
Parent taxon: Euechinoidea according to A. Kroh and A. B. Smith 2010
See also Durham and Melville 1957 and Smith 1991
Sister taxa: Acroechinoidea, Diadematacea, Echinothurioida, Galeroclypeus, Loriolella, Serpianotiaroida, Triadocidaridae, Triadotiaroida
Subtaxa: Arbacioida Besairiecidaris Bramus Camarodonta Crinocidaris Glyphopneustidae Plesiocidaroida Stirodonta Stomopneustoida Temnopleuroidea
Ecology: epifaunal grazer-deposit feeder