Echinoidea - Arbacioida - Arbaciidae

Parent taxon: Arbaciidae according to H. B. Fell and D. L. Pawson 1966

Sister taxa: Acropeltis, Acrosaster, Arbacia, Arbaciella, Arbia, Atopechinus, Baueria, Codiopsis, Coelopleurus, Cottaldia, Glypticus, Goniopygus, Heteropodia, Pleiocyphus, Podocidaris

Subtaxa: none

Ecology: epifaunal grazer