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: Ophiuroidea according to J. W. M. Jagt 2000
See also Hess and Meyer 2008, Smith et al. 1995 and Storc 2004
Sister taxa: Ankhurida, Ataxaster, Calclyra, Calclyridae, Calyptactis, Encrinasteridae, Euzonosomatidae, Hallasteridae, Lumectaster, Muldaster, Myophiuridadup, Nodolanx, Oegophiurida, Oegophiuridea, Oegophiuroida, Ophiaulaxoides, Ophioma, Ophiopetagno, Ophiotrigonum, Ophiurella, Phrynophiurida, Stenasteridae, Zygophiurae
Subtaxa: Ophiaxina Schizospondylus Transspondylus
Ecology: slow-moving low-level epifaunal detritivore-suspension feeder
Distribution: there are no occurrences of Ophiuridea in the database