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] [node-based clade] †Neosauropoda Bonaparte 1986 [Wilson & Sereno 1998] [branch-based clade] †Diplodocoidea Upchurch 1995 [Wilson & Sereno 1998] see Superfamily Diplodocoidea Marsh, 1884 [node-based clade] †Flagellicaudata Harris & Dodson 2004 [branch-based clade] †Diplodocidae Marsh 1884 [Sereno 1998] see Family Diplodocidae Marsh, 1884 †Dinheirosaurus Bonaparte & Mateus, 1999 1 †Dinheirosaurus lourinhanensis Bonaparte & Mateus, 1999