1 Natura - nature
   2.1 actualia - actual entities
     2 Mundus Plinius - physical world
       3 naturalia - natural bodies
         2 Biota
           3.2 Domain Eukaryota Chatton, 1925 - eukaryotes
             1 Amorphea Adl et al., 2012
               3.2 Opisthokonta Cavalier-Smith, 1987
                 1 Holozoa
                   2.2.2 Kingdom Animalia Linnaeus, 1758 - animals
                     3 Epitheliozoa Ax, 1996
                       2 Eumetazoa Bütschli, 1910 - eumetazoans
                         2 Bilateria Hatschek, 1888 - bilaterians
                           7 Eubilateria Ax, 1987
                             2 Superphylum Deuterostomia Grobben, 1908 - deuterostomes
                               2.2 [crown] Phylum Chordata Bateson, 1885 - chordates
                                 3.2 Subphylum Vertebrata Cuvier, 1812 - vertebrates
                                   3.2.2 [crown] Myopterygii - myopterygians
                                     2.2.2 [crown] Superclass Gnathostomata Zittel, 1879 - jawed vertebrates
                                       2.2 Grade Teleostomi Bonaparte, 1836
                                         2 Euteleostomi - bony vertebrates
                                           2.2.2 Sarcopterygii Romer, 1955
                                             2.2.2.2.2 [crown] Rhipidistia Cope, 1887
                                               2 Tetrapodomorpha Ahlberg, 1991
                                                 2.2 [crown] Osteolepidimorpha
                                                   1 Order †Osteolepidiformesᵀ Berg, 1937
                                                   2.1.1 Genus †Gogonasus Long, 1985, incertae sedis
                                                   2.1.2 Order †Elpistostegalia Camp & Allison, 1961 [monotypic]
                                                   2.1.2.n.1 Family †Elginerpetontidae
                                                   2.1.2.n.2 Superclass Tetrapoda Goodrich, 1930 - tetrapods