[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
           Subclass Actinopterygii Woodward, 1891 - ray-finned fishes see Class Actinopterygii Woodward, 1891
             Order †Palaeonisciformes Jarvik, 1961
               Family †Trissolepididae Fritsch, 1893, nom. praeval., incertae sedis
                 1 Genus †Trissolepis Fritsch, 1893, nom. illeg. see Genus Sphaerolepis Fritsch, 1877
                 2 Genus †Gymnoniscus Berg, 1936
                 3 Genus †Sphaerolepis Fritsch, 1877