Echinoidea - Euechinoidea

Full reference: A. de Gregorio. 1930. Sul Permiano di Sicilia. Annales de Géologie et de Paléontologie 52:1-67

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

Sister taxa: Arbacioida, Besairecidaris, Bramus, Camarodonta, Glyphopneustidae, Orthopsida, Plesiocidaroida, Stomopneustoida

Subtaxa: none

Ecology: epifaunal grazer-deposit feeder