Class Cephalopoda Cuvier, 1795 - cephalopods Subclass Coleoidea Bather, 1888 Superorder †Belemnoidea Gray, 1849 Order †Diplobelida Jeletzky, 1965 1 Family †Diplobelidae Naef, 1926 2 Family †Chondroteuthididae Jeletzky, 1965