Elasmobranchii (Elasmobranchii) wani nau'i ne na Chondrichthyes ko kifin cartilaginous, ciki har da sharks (superorder Selachii) da rays, skates, da sawfish (superorder Batoidea). 'Yan wannan rukuni suna da nau'i biyar zuwa bakwai na ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwar ƙuƙwalwa.
sharks (superorder Selachii) da kuma rays, skates, da sawfish (superorder Batoidea)