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
         †Rebbachisauridae Bonaparte 1997 [Wilson 2004] see Family Rebbachisauridae Bonaparte, 1997
           1 Genus †Histriasaurus Dalla Vecchia, 1998
           2.1 Genus †Rebbachisaurus Lavocat, 1954
           2.2.1 †Limaysaurinae Whitlock 2011 see Subfamily Limaysaurinae Whitlock, 2011
           2.2.2 †Nigersaurinae Whitlock 2011 see Subfamily Nigersaurinae Whitlock, 2011
           2.3 Genus †Nopcsaspondylus Apesteguía, 2007
           3 Genus †Rayososaurus Bonaparte, 1995