Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801
   Class Reptilia Linnaeus, 1758 - 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.
           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 †Brachiosauridae Riggs, 1904
                 3 Family †Camarasauridae Cope, 1877
                 4 Family †Diplodocidae Marsh, 1884
                 5 Family †Titanosauridae Lydekker, 1885 - titanosaurids