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] †Diplodocoidea Upchurch 1995 [Wilson & Sereno 1998] see Superfamily Diplodocoidea Marsh, 1884 †Diplodocimorpha Calvo & Salgado, 1995 1 †Rebbachisauridae Bonaparte 1997 [Wilson 2004] see Family Rebbachisauridae Bonaparte, 1997 2.1 †Diplodocidae Marsh 1884 [Sereno 1998] see Family Diplodocidae Marsh, 1884 2.2 †Dicraeosauridae Huene 1956 [Sereno 1998] see Family Dicraeosauridae Janensch, 1929