Ophiuroidea

Full reference: W. K. Spencer. 1951. Early Palaeozoic starfish. Philosophical Transactions of the Royal Society of London, series B 235(B623):87-129

Parent taxon: Ophiuroidea according to W. K. Spencer and C.W. Wright 1966

Sister taxa: Ataxaster, Calclyra, Calclyridae, Calyptactis, Cheiropterasteridae, Encrinasteridae, Eophiuridae, Euryalida, Euzonosomatidae, Hallasteridae, Klasmuridae, Lumectaster, Myophiuroida, Oegophiurida, Oegophiuridea, Oegophiuroida, Ophiaulaxoides, Ophioflabellum, Ophioma, Ophiotrigonum, Ophiurella, Ophiurida, Ophiuridea, Phrynophiurida, Stenasteridae

Subtaxa: Eophiuricae, Palaeuricae, Parophiurina, Proturina, Scalarina

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