Superfamily
Ophiactoidea
Ophiothrix spiculata. Photo: (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC)
The Gnathophiurina are a group of Ophiuroidea mostly treated as suborder (but at first as an order Gnathophiurida, and sometimes as infraorder of Ophiurina or not used at all).
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