†family Serpianotiaridae Hagdorn 1995 (pencil urchin)
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
Sister taxa: Cidaridea, Delocidaris, Diplocidaridae, Dorocidaris, Fellius, Hirudocidaris, Histocidaridea, Leurocidaris, Menocidaris, Mesodiadema, Mikrocidari, Minicidaris, Miocidaridae, Nenoticidaridae, Oedematocidaris, Palmerius, Polycidaridae, Prophyllacanthus, Rhabdocidaridae, Tretocidaris, Triadotiaridae
Subtaxa: Serpianotiaris
Type: Serpianotiaris
Ecology: slow-moving low-level epifaunal grazer-omnivore