属软骨鱼纲的鱼软骨鱼纲鱼的一种,以软骨骨架和板状鱼鳞为特征,包括鲨、鳐、灰鳐。
Any of numerous fishes of the class chondrichthyes , characterized by a cartilaginous skeleton and placoid scales and including the sharks , rays , and skates .