Ophiacanthida
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Ophiacanthida is an order of echinoderms belonging to the class Ophiuroidea.
The order contains two suborders, Ophiodermatina and Ophiacanthina, which include the following families:
- Ophiodermatina Ljungman[sv], 1867 Ophiodermatidae Ophiomyxidae Ophiopezidae Ophiocomidae
- Ophiacanthina O'Hara, Hugall, Thuy, Stöhr & Martynov, 2017 Clarkcomidae Ophiacanthidae Ophiobyrsidae Ophiocamacidae Ophiopteridae Ophiotomidae Ophiojuridae