The Gnathophiurina are a group of Ophiuroidea mostly treated as suborder (but at first as an order Gnathophiurida,Matsumoto, H., A New Classification of the Ophiuroidea: With Descriptions of New Genera and Species, Proc. of the Academy of Natural Sciences of Philadelphia, Vol.67, No.1 (1915) and sometimes as infraorder of OphiurinaSmith, A.B.; Paterson, G.L.J. . Ophiuroid phylogeny and higher taxonomy: morphological, molecular and palaeontological perspectives. Zool. J. Linn. Soc. 114 (1995) or not used at all).
Families In the superfamily Amphiuroidea: Amphilepididae Matsumoto, 1915 Amphiuridae Ljungman, 1867 In the superfamily Ophiactoidea: Ophiactidae Matsumoto, 1915 Ophiopholidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018 Ophiothamnidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018 Ophiotrichidae Ljungman, 1867
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