Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes see [unranked] Euteleostomi
         Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
           Infraclass Chondrostei Müller, 1844 see Subclass Chondrostei Müller, 1844
             Order †Palaeonisciformes Jarvik, 1961
               Suborder †Palaeoniscoidea see Suborder Palaeoniscoidei
                 01 Family †Cheirolepidae see Family Cheirolepididae Pander, 1860
                 02 Family †Stegotrachelidae Gardiner, 1963
                 03 Family †Tegeolepidae see Family Tegeolepididae Romer, 1945
                 04 Family †Rhabdolepidae Gardiner, 1963
                 05 Family †Rhadinichthyidae Romer, 1945
                 06 Family †Carbovelidae
                 07 Family †Canobiidae
                 08 Family †Cornuboniscidae
                 09 Family †Styracopteridae
                 10 Family †Cryphiolepidae
                 11 Family †Holuriidae
                 12 Family †Cosmoptychiidae
                 13 Family †Pygopteridae Aldinger, 1937
                 14 Family †Elonichthyidae Aldinger, 1937
                 15 Family †Acrolepidae Aldinger, 1937
                 16 Family †Coccocephalichthyidae
                 17 Family †Amblypteridae
                 18 Family †Aeduellidae Romer, 1945
                 19 Family †Commentryidae
                 20 Family †Palaeoniscidae Vogt, 1852
                 21 Family †Dicellopygidae Romer, 1945
                 22 Family †Boreolepidae Aldinger, 1937
                 23 Family †Birgeriidae Berg, 1940
                 24 Family †Scanilepidae
                 25 Family †Centrolepidae Gardiner, 1960
                 26 Family †Coccolepidae Berg, 1940