Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       ?Class? †Acanthodii Owen, 1846 - acanthodians
         Order †Climatiiformes Berg, 1940
           1 Family †Climatiidae Berg, 1940, "nom. praeval."
           2 Family †Diplacanthidae Bleeker, 1859
           3 Family †Gyracanthidae Woodward, 1906