Echinoidea - Arbacioida - Arbaciidae

Parent taxon: Arbaciidae according to R. A. Linder et al. 1988

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

Subtaxa: Arbacia abiquaensis, Arbacia lixula

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Type: Echinus lixula

Ecology: epifaunal grazer