Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Gnathostomata Teleostomi Bonaparte, 1836 ?Class? †Acanthodii Owen, 1846 - acanthodians 1 Order †Climatiiformes Berg, 1940 2 Order †Ischnacanthiformes Berg, 1940 [monotypic] 3 Order †Acanthodiformes Berg, 1940 [monotypic]