Asteroidea - Valvatida

PaleoDB taxon number: 81139

Full reference: J. E. Gray. 1840. A synopsis of the genera and species of the class Hypostoma Asterias (Linn.). Annals and Magazine of Natural History 6:275-290

Parent taxon: Valvatida according to D. B. Blake 1989

Sister taxa: Acanthasteridae, Archasteridae, Arthraster, Asteriaceros, Asterodiscididae, Asteropseidae, Chaetasteridae, Ganeriidae, Geinitzaster, Goniasteridae, Goniasteroidea, Granulosina, Leptaster, Mithrodiidae, Odontasteridae, Ophidiasteridae, Oreasteridae, Poraniidae, Pycinasteridae, Sphaerasteridae, Stauranderasteridae, Tumulosina

Subtaxa: Asterininae, Tremasterinae

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Ecology: epifaunal detritivore