[Osteichthyes] Huxley, 1880
   Actinopterygii Woodward, 1891 see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
     †Palaeonisci
       †Palaeoniscomorpha Lund, Poplin & McCarthy, 1995
         †Palaeonisciformes Jarvik, 1961 see Order Palaeonisciformes Jarvik, 1961
           Genus †Boreosomus Stensiö, 1921
             1 †Boreosomus pivetaeau Mickle, 2015, orth. inval. see Boreosomus piveteaui Nielsen, 1942