Morphological diagnoses of higher taxa in Ophiuroidea (Echinodermata) in support of a new classification
Author
Stöhr, Sabine
Author
Hugall, Andrew F.
Author
Thuy, Ben
Author
Martynov, Alexander
text
European Journal of Taxonomy
2018
2018-03-21
416
1
35
journal article
22339
10.5852/ejt.2018.416
2eebb037-4ab1-433c-a9f6-8fe319e9fda9
3806109
AD094812-5768-43E9-BCC2-9226E69F0820
Order
Ophioleucida
O’Hara
et al.
, 2017
Diagnosis
Dorsal disc with granules. Radial shields with distal adradial portion exposed. Abradial genital plate with concave adradio-distal tip. Dorsal arm plates rectangular to trapezoid with straight edges. Arm spine articulations irregularly rhombic, framing large, dorsoventrally elongated muscle opening, small nerve opening ventral to articulation. Lateral arm plates fragile. Arm spine articulations commonly separated from distal plate edge by a ledge. Ventro-distal edge of lateral arm plates protruding ventralwards.