Echinoidea - Euechinoidea

Alternative spelling: Pedinina

Full reference: T. Mortensen. 1939. New Echinoida (Aulodonta). Preliminary Notice. Videnskabelige Meddelelser fra Danks naturhistorisk Forening i København 103:547-550

Parent taxon: Acroechinoidea according to A. Kroh and A. B. Smith 2010

Sister taxa: Aspidodiatematoida, Carinacea, Diadematoida, Micropygoida, Pelanechinidae

Subtaxa: Farquharsonia, Leptocidaris, Pedinidae

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Ecology: slow-moving low-level epifaunal detritivore