Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Teleostomi Bonaparte, 1836
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. - amniotes see Clade Amniota Haeckel 1866 [Laurin & Reisz 2020]
           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]
                           Family †Titanosauridae Lydekker, 1885 - titanosaurids
                             01 Genus †Aegyptosaurus Stromer, 1932
                             02 ?Genus †Aepisaurus Gervais, 1853, nom. dub.
                             03 Genus †Alamosaurus Gilmore, 1922
                             04 ?Genus †Algoasaurus Broom, 1904, nom. dub.
                             05 Genus †Antarctosaurus Huene, 1929
                             06 Genus †Argyrosaurus Lydekker, 1893
                             07 ?Genus †Campylodoniscus Kuhn, 1961, nom. dub.
                             08 ?Genus †Chubutisaurus del Corro, 1975
                             09 Genus †Hypselosaurus Matheron, 1869, nom. dub.
                             10 Genus †Laplatasaurus von Huene, 1928
                             11 Genus †Loricosaurus Huene, 1929 see Genus Saltasaurus Bonaparte & Powell, 1980
                             12 ?Genus †Macrurosaurus Seeley, 1869, nom. dub.
                             13 Genus †Saltasaurus Bonaparte & Powell, 1980
                             14 Genus †Titanosaurus Lydekker, 1877, nom. dub.
                             15 Genus †Tornieria Sternfeld, 1911