Family Ophiolepididae Ljungman, 1867 (restricted)

Type genus

Ophiolepis Müller & Troschel, 1840 (type species: O. superba H.L. Clark, 1915).

Other genera

Ophioteichus H.L. Clark, 1938, Ophiotypa Koehler, 1897 .

Diagnosis

Accessory dorsal and ventral arm plates. Tooth sockets large, round to oval, with low, indistinct borders, deep but not penetrating. Lateral arm plates with single spur on ventral third of proximal half. Arm spine articulation with muscle and nerve openings of similar size. Finely porous stereom in all arm plates.