Baker, Alan N., Okanishi, Masanori & Pawson, David L., 2018, Euryalid brittle stars from the International Indian Ocean Expedition 1963 - 64 (Echinodermata: Ophiuroidea: Euryalida), Zootaxa 4392 (1), pp. 1-27: 3

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Subfamily Euryalinae  Gray, 1840, emend. Okanishi & Fujita, 2013

Diagnosis. Arms simple, or branching, coiled. Disc five-lobed or circular, covered with granule- and/or plateshaped external ossicles, sometimes with large conical tubercles. Teeth triangular and widened, flat, situated on top of dental plate. Radial shields narrow, multi-layered. Oral furrows of vertebrae with oral bridge, or covered by ventral arm plates ( Astrobrachion  ) throughout arms. Up to three arm spines. Genital slits close to periphery of disc.