Family Amphilepididae Matsumoto, 1915

Type genus

Amphilepis Ljungman, 1867 (type species: A. norvegica (Ljungman, 1865)) .

Other genera

Ophiomonas Djakonov, 1952 .

Diagnosis

Tooth sockets with small, slit-shaped, perforating holes with indistinct borders. Infradental papillae minute, single wide lateral oral papilla. Arm spine articulation with two smooth ridges, connected proximally by a depressed bridge.

Remarks

This is a paedomorphic family with reduced characters.