Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
               Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
                 Superorder Archosauria Cope, 1869 - archosaurs see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
                   †Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                     Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
                       Suborder †Sauropodomorpha Huene, 1932 see Order Sauropodomorpha Huene, 1932
                         Infraorder †Sauropoda Marsh, 1878 see Clade Sauropoda Marsh 1878 [Salgado et al. 1997]
                           1 Family †Cetiosauridae Lydekker, 1888
                           2 Family †Diplodocidae Marsh, 1884
                           3 Family †Brachiosauridae Riggs, 1904
                           4 Family †Titanosauridae Lydekker, 1893 - titanosaurids
                           5 Family †Camarasauridae Cope, 1877
                           6 Family †Euhelopodidae Romer, 1956