Dinosauria Owen 1841 [Padian & May 1993], nom. cl. inval. see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
   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]
       †Titanosauriformes Salgado, Coria & Calvo 1997
         †Titanosauria Bonaparte & Coria 1993
           †Lithostrotia Upchurch, Barrett & Dodson 2004
             †Lirainosaurinae Díez Díaz, Garcia, Pereda-Suberbiola, Jentgen-Ceschino, Stein, Godefroit & Valentin 2018 see Subfamily Lirainosaurinae Díez Díaz, Garcia, Pereda-Suberbiola, Jentgen-Ceschino, Stein, Godefroit & Valentin, 2018
               Genus †Atsinganosaurus Garcia, Amico, Fournier, Thouand & Valentin, 2010
                 1 †Atsinganosaurus velauciensis Garcia, Amico, Fournier, Thouand & Valentin, 2010