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, 1893 - titanosaurids