Sarcopterygii Romer, 1955
   Rhipidistia Cope, 1887
     Tetrapodomorpha Ahlberg, 1991
       Osteolepidida Boulenger 1901 [Cloutier & Ahlberg 1996]
         1 †Osteolepiformes Berg, 1937 [paraphyletic]
         2.1 †Elpistostegalia Camp & Allison, 1961
         2.2 Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]