Actinozonella Stöhr, 2011 (taxonomy source)
Amphilepidida (original description)
Amphilepididae Matsumoto, 1915 (taxonomy source)
Amphiophiura Matsumoto, 1915 (taxonomy source)
Amphiuroidea Ljungman, 1867 (taxonomy source)
Aspidophiura Matsumoto, 1915 (taxonomy source)
Asteronychidae Ljungman, 1867 (status source)
Asteroschematidae Verrill, 1899 accepted as Euryalidae Gray, 1840 (taxonomy source)
Asteroschematinae Verrill, 1899 emended Okanishi et al., 2011 accepted as Euryalidae Gray, 1840 (status source)
Astrocharidae Okanishi et al., 2011 accepted as Astrocharinae Okanishi et al., 2011 accepted as Euryalidae Gray, 1840 (status source)
Astrocharinae Okanishi et al., 2011 accepted as Euryalidae Gray, 1840 (status source)
Astrogymnotes H.L. Clark, 1914 (taxonomy source)
Astrophiura Sladen, 1879 (taxonomy source)
Astrophiuridae Sladen, 1879 (taxonomy source)
Dictenophiura H.L. Clark, 1923 accepted as Ophiura (Dictenophiura) H.L. Clark, 1923 (taxonomy source)
Euryalida (taxonomy source)
Euryophiurida (original description)
Euvondrea Fell, 1961 (taxonomy source)
Glaciacantha Fell, 1961 (taxonomy source)
Gnathophiurina (taxonomy source)
Gorgonocephalidae Ljungman, 1867 (status source)
Gymnophiura Lütken & Mortensen, 1899 (taxonomy source)
Hemieuryalina accepted as Hemieuryalidae Verrill, 1899 (status source)
Ophiacanthida (original description)
Ophiacanthidae Ljungman, 1867 (taxonomy source)
Ophiacanthina (original description)
Ophiactoidea Ljungman, 1867 (taxonomy source)
Ophintegrida (original description)
Ophiobyrsa Lyman, 1878 (taxonomy source)
Ophiobyrsidae Matsumoto, 1915 (status source)
Ophiocanopidae Mortensen, 1932 accepted as Ophiacanthidae Ljungman, 1867 (taxonomy source)
Ophiochiton Lyman, 1878 (taxonomy source)
Ophiochitonidae Matsumoto, 1915 accepted as Ophionereididae Ljungman, 1867 (status source)
Ophiocomoidea Ljungman, 1867 (taxonomy source)
Ophiodermatina (taxonomy source)
Ophiodermatoidea Ljungman, 1867 (taxonomy source)
Ophiogona Studer, 1876 (taxonomy source)
Ophiolepididae Ljungman, 1867 (restricted) (taxonomy source)
Ophiolepidoidea Ljungman, 1867 (taxonomy source)
Ophioleucida (original description)
Ophiomages Koehler, 1923 (taxonomy source)
Ophiomisidium Koehler, 1914 (taxonomy source)
Ophiomonas Djakonov, 1952 (taxonomy source)
Ophiomusina (original description)
Ophiomyxidae Ljungman, 1867 (taxonomy source)
Ophiomyxina accepted as Ophiomyxidae Ljungman, 1867 (status source)
Ophionereidina (original description)
Ophionereidoidea Ljungman, 1867 (taxonomy source)
Ophioperla Koehler, 1912 (taxonomy source)
Ophiophrixus H.L. Clark, 1911 (taxonomy source)
Ophiophycis Koehler, 1901 (taxonomy source)
Ophioplax Lyman, 1875 (taxonomy source)
Ophiopleura Danielssen & Koren, 1877 (taxonomy source)
Ophioplinthus Lyman, 1878 (taxonomy source)
Ophioplocus Lyman, 1861 (taxonomy source)
Ophioplus Verrill, 1899 (taxonomy source)
Ophiopsilidae Matsumoto, 1915 (status source)
Ophiopsilina (taxonomy source)
Ophiopsilinae Matsumoto, 1915 accepted as Ophiopsilidae Matsumoto, 1915 (status source)
Ophiopsiloidea Matsumoto, 1915 (taxonomy source)
Ophiopyrgidae Perrier, 1893 (status source)
Ophiopyrgus Lyman, 1878 (taxonomy source)
Ophioscolecida (original description)
Ophioscolecidae Lütken, 1869 (basis of record)
Ophiosmilax Matsumoto, 1915 (taxonomy source)
Ophiosteira Bell, 1902 (taxonomy source)
Ophiotretidae (original description (unavailable nomenclaturally))
Ophiotrichidae Ljungman, 1867 (taxonomy source)
Ophiozonella Matsumoto, 1915 (taxonomy source)
Ophiozonoida H.L. Clark, 1915 (taxonomy source)
Ophiurida (taxonomy source)
Ophiurina (taxonomy source)
Placophiothrix H.L. Clark, 1938 accepted as Macrophiothrix H.L. Clark, 1938 (source of synonymy)
Quironia A.H. Clark, 1934 (taxonomy source)
Spinophiura Stöhr & Segonzac, 2006 (taxonomy source)
Stegophiura Matsumoto, 1915 (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]