Asteroidea - Valvatida - Poraniidae
Full reference: E. Perrier. 1893. Traité de Zoologie. Librairie S. Savy, Paris 1(2):1-864
Parent taxon: Valvatida according to D. B. Blake et al. 2017
See also Blake 1989, Gale 1987, Gale 2011, Hess 1972, Mah and Blake 2012, Perrier 1893 and Spencer and Wright 1966
Sister taxa: Acanthasteridae, Archasteridae, Asteriaceros, Asterinidae, Asterodiscididae, Asteropseidae, Chaetasteridae, Ganeriidae, Geinitzaster, Goniasteridae, Goniasteroidea, Granulosina, Leptaster, Mithrodiidae, Odontasteridae, Ophidiasteridae, Oreasteridae, Pycinasteridae, Sphaerasteridae, Stauranderasteridae, Tumulosina
Subtaxa: Noriaster Sphaeriaster
Ecology: slow-moving low-level epifaunal carnivore
Distribution:
• Jurassic of Switzerland (1 collection)
• Triassic of Italy (1), Slovenia (1)
Total: 3 collections each including a single occurrence