Amphilepidida (original description)
Amphilepididae Matsumoto, 1915 (taxonomy source)
Amphiuroidea Ljungman, 1867 (taxonomy source)
Euryalida (taxonomy source)
Euryophiurida (original description)
Gnathophiurina (taxonomy source)
Gorgonocephalidae Ljungman, 1867 (status source)
Gymnophiura Lütken & Mortensen, 1899 (taxonomy source)
Ophiacanthida (original description)
Ophiacanthidae Ljungman, 1867 (taxonomy source)
Ophiacanthina (original description)
Ophiactoidea Ljungman, 1867 (taxonomy source)
Ophintegrida (original description)
Ophiocomoidea Ljungman, 1867 (taxonomy source)
Ophiodermatina (taxonomy source)
Ophiodermatoidea Ljungman, 1867 (taxonomy source)
Ophiolepididae Ljungman, 1867 (restricted) (taxonomy source)
Ophiolepidoidea Ljungman, 1867 (taxonomy source)
Ophioleucida (original description)
Ophiomusina (original description)
Ophionereidina (original description)
Ophionereidoidea Ljungman, 1867 (taxonomy source)
Ophioplinthus Lyman, 1878 (taxonomy source)
Ophiopyrgidae Perrier, 1893 (status source)
Ophiotrichidae Ljungman, 1867 (taxonomy source)
Ophiurida (taxonomy source)
Ophiurina (taxonomy source)

 Synonymy

 for Placophiothrix H.L. Clark, 1938

Placophiothrix forms a monophyletic clade with Macrophiothrix acc. to Hoggett (1990) and O'Hara et al. (2017, suppl.). [details]

 Taxonomy

 for Euryalida

The superfamilies Gorgoncephalidea and Euryalidea proposed by Okanishi & Fujita (2013) were not supported by O'Hara ... [details]

 Taxonomy

 for Ophiodermatina

Records under revision. Families will be changed soon. [details]

 Taxonomy

 for Ophiozonella Matsumoto, 1915

Ophiozonella is currently paraphyletic. Species with three or more arm spines group together, species with fewer ... [details]