Subclass Ambuloasteroidea Blake and Hagdorn 2003 (sea star)
Full reference: D. B. Blake and H. Hagdorn. 2003. The Asteroidea (Echinodermata) of the Muschelkalk (Middle Triassic of Germany). Paläontologische Zeitschrift 77(1):23-58
Parent taxon: Asteroidea according to D. B. Blake and H. Hagdorn 2003
Sister taxa: Arthrasteridae, Cryptozonia, Embolasteridae, Eriaster, Euasteroidea, Fandasteridae, Hemizonida, Hudsonasteridae, Lepidasteridae, Monasteridae, Neoasteroidea, Neopalaeasteridae, Palasterinidae, Petraster, Phanerozonida, Platyasterida, Pleiadeaster, Pleuraster, Promopalaeaster, Promopalaeasteridae, Protasteracanthion, Pustulosida, Spinulosacea, Trichotaster, Uranasteridae, Zorocallida
Subtaxa: Compsasteridae
Ecology: slow-moving low-level epifaunal carnivore