A marine cartilaginous fish that possesses a specialized defensive structure in the form of a poison sting is scientifically known as :

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Trygon , commonly known as the stingray, is a marine cartilaginous fish belonging to the class Chondrichthyes. It possesses a specialized defensive structure in the form of a poison sting on its tail. Torpedo is an electric ray that possesses electric organs for defense and capturing prey. Pristis is the sawfish. Carcharodon is the great white shark. Answer: Trygon