Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812
         Myopterygii - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836
               Euteleostomi - bony vertebrates
                 Class Sarcopterygii Romer, 1955 - lobe-finned fishes and tetrapods see Clade Sarcopterygii Romer, 1955
                   Subclass Dipnotetrapodomorpha Nelson, 2006 see [unranked] Dipnotetrapodomorpha Nelson, 2006
                     Rhipidistia Cope, 1887
                       Tetrapodomorpha Ahlberg, 1991
                         Osteolepidimorpha
                           Infraclass †Elpistostegalia Camp & Allison, 1961 [monotypic] see Order Elpistostegalia Camp & Allison, 1961
                             1 Family †Elpistostegidae Romer, 1947 - elpistostegids