Synonym: Uranaster Gregory 1899
Full reference: E. Billings. 1858. On the Asteridae of the Lower Silurian rocks of Canada. Figures and descriptions of Canadian organic remains. Geological Survey of Canada 3:75-85
Parent taxon: Asteroidea according to J. Dean Shackleton 2005
Sister taxa: Ambuloasteroidea, Arthrasteridae, Cryptozonia, Embolasteridae, Eriaster, Euasteroidea, Fandasteridae, Hemizonida, Hudsonasteridae, Lepidasteridae, Monasteridae, Neoasteroidea, Neopalaeasteridae, Palasterinidae, Phanerozonida, Platyasterida, Pleiadeaster, Pleuraster, Promopalaeaster, Promopalaeasteridae, Protasteracanthion, Pustulosida, Spinulosacea, Trichotaster, Uranasteridae, Zorocallida
Subtaxa: Petraster americanus, Petraster angustior, Petraster kinahani, Petraster richi, Petraster rigidus, Petraster smythi, Uranaster ramseyensis
Type: Palasterina ramseyensis
Ecology: slow-moving low-level epifaunal carnivore