Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       ?Class? †Acanthodii Owen, 1846
         Order †Climatiiformes Berg, 1940
           1 Family †Climatiidae Berg, 1940
           2 Family †Diplacanthidae Woodward, 1891
           3 Family †Gyracanthidae Woodward, 1906