[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 †Xenacanthimorpha Order †Xenacanthiformes Berg, 1955 Family †Diplodoselachidae Dick, 1981 Genus †Lebachacanthus Soler-Gijón, 1997