Ophiuroidea [class]
(28 species)

Ophiurida [order] (27)

Amphiuridae [family] (5)

Astrophiuridae [family] (1)

Ophiacanthidae [family] (1)

Ophiactidae [family] (1)

Ophiocomidae [family] (4)

Ophiodermatidae [family] (5)

Ophiolepididae [family] (2)

Ophiomyxidae [family] (1)

Ophionereididae [family] (2)

Ophiotrichidae [family] (5)