Saurischia Seeley 1887 [Gauthier 1986], nom. cl. inval. see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020] †Sauropoda Marsh 1878 [Salgado et al. 1997] †Neosauropoda Bonaparte 1986 [Wilson & Sereno 1998] †Diplodocoidea Upchurch 1995 [Wilson & Sereno 1998] see Superfamily Diplodocoidea Marsh, 1884 †Flagellicaudata Harris & Dodson 2004 †Dicraeosauridae Huene 1956 [Sereno 1998] see Family Dicraeosauridae Janensch, 1929 Genus †Amargasaurus Salgado & Bonaparte, 1991 †Amargasaurus cazaui Salgado & Bonaparte, 1991