[Phylum] Chordata Bateson, 1885 - chordates Subphylum Craniata auct. Infraphylum Vertebrata Lamarck, 1801 - vertebrates Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Superorder †Cladoselachimorpha Order †Symmoriiformes Zangerl, 1981 Family †Symmoriidae Dean, 1909 Genus †Symmorium Cope, 1893