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
         †Rebbachisauridae Bonaparte 1997 [Wilson 2004] see Family Rebbachisauridae Bonaparte, 1997
           †Khebbashia Fanti et al., 2015
             †Rebbachisaurinae Wilson & Allain, 2015 see Subfamily Rebbachisaurinae Wilson & Allain, 2015
               Genus †Katepensaurus Ibiricu, Casal, Martínez, Lamanna, Luna & Salgado, 2013