†family Triadotiaridae Hagdorn 1995 (pencil urchin)
Echinoidea - Cidaroida - Triadotiaridae
Full reference: H. Hagdorn. 1995. Die Seeigel des Germanischen Oberen Muschelkalks. Geologische und Paläontologische Mitteilungen, Innsbruck 20:245-281
Parent taxon: Cidaroida according to A. Kroh and A. B. Smith 2010
See also Hagdorn 1995 and Smith 2009
Sister taxa: Cidaridea, Delocidaris, Diplocidaridae, Fellius, Heterocidaridae, Hirudocidaris, Histocidaridea, Leurocidaris, Menocidaris, Mesodiadema, Mikrocidari, Minicidaris, Miocidaridae, Oedematocidaris, Palmerius, Paracidaridae, Polycidaridae, Prophyllacanthus, Rhabdocidaridae, Serpianotiaridae
Subtaxa: Lenticidaris Triadotiaris
Type: Triadotiaris
Ecology: slow-moving low-level epifaunal grazer-omnivore
Distribution: