Order †Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
   Suborder †Sauropodomorpha Huene, 1932 see Order Sauropodomorpha Huene, 1932
     1 Infraorder †Prosauropoda Huene, 1920 see Suborder Prosauropoda Huene, 1920
     2 Infraorder †Sauropoda Marsh, 1878 see Clade Sauropoda Marsh 1878 [Salgado et al. 1997]