Full reference: W. K. Spencer. 1930. A monograph of the British Palaeozoic Asteroidea. Monograph of the Palaeontographical Society, London 1828(8):389-436
Parent taxon: Ophiuroidea according to W. K. Spencer 1930
See also Lehmann 1957 and Owen 1965
Sister taxa: Ataxaster, Calclyra, Calclyridae, Calyptactis, Cheiropterasteridae, Encrinasteridae, Euryalida, Hallasteridae, Lumectaster, Muldaster, Myophiuridadup, Nodolanx, Oegophiurida, Oegophiuridea, Oegophiuroida, Ophiaulaxoides, Ophioma, Ophiopetagno, Ophiotrigonum, Ophiurella, Ophiurida, Ophiuridea, Phrynophiurida, Stenasteridae, Zygophiurae
Subtaxa: Hymenosoma
Type: Euzonosoma
Ecology: slow-moving low-level epifaunal detritivore-suspension feeder
Distribution: found only at Eschenbach-Bocksberg mine, Bundenbach (Devonian of Germany)