PaleoDB taxon number: 31508

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: Asterozoa according to D. B. Blake 2013

Sister taxa: Asteroidea, Catervaparmasteridae, Eopentaroida, Falloasteridae, Phragmactinidae, Somasteroidea, Stenuroidea, Auluroidea

Subtaxa: Ataxaster, Calclyra, Calclyridae, Calyptactis, Cheiropterasteridae, Encrinasteridae, Euryalida, Euzonosomatidae, Hallasteridae, Lumectaster, Maydena, Myophiuroida, Oegophiurida, Oegophiuridea, Oegophiuroida, Ophiaulaxoides, Ophioma, Ophiotrigonum, Ophiurella, Ophiurida, Ophiuridea, Phrynophiurida, Stenaster, Stenasteridae, Zygophiurae

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Ecology: slow-moving low-level epifaunal detritivore-suspension feeder