Euryalid brittle stars from the International Indian Ocean Expedition 1963 - 64 (Echinodermata: Ophiuroidea: Euryalida)
Baker, Alan N.
Okanishi, Masanori
Pawson, David L.
Zootaxa
2018
2018-03-08
4392
1
1
27
7NG2P
Verrill, 1899
Verrill
1899
[246,596,1612,1638]
Ophiuroidea
Asteronychidae
Animalia
Euryalida
6
7
Echinodermata
family
Diagnosis.Arms simple, coiled. Disc five lobed or circular, covered with skin and/or plate-shaped external ossicles. Teeth spiniform, covering whole side of jaw. Radial shields narrow, multi-layered. Ventral arm plates limited to a few basal arm segments. Up to more than ten arm spines. Genital slits usually small, half the length of the height of the disc.