†order Triadotiaroida Hagdorn 1995 (sea urchin)
Full reference: H. Hagdorn. 1995. Die Seeigel des Germanischen Oberen Muschelkalks. Geologische und Paläontologische Mitteilungen, Innsbruck 20:245-281
Parent taxon: Euechinoidea according to H. Hagdorn 1995
Sister taxa: Acroechinoidea, Diadematacea, Echinacea, Echinothurioida, Galeroclypeus, Loriolella, Serpianotiaroida, Triadocidaridae
Subtaxa: none
Ecology: epifaunal grazer-deposit feeder
Distribution: there are no occurrences of Triadotiaroida in the database