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
         1 Genus †Brachiosaurus Riggs, 1903
         2.1 Genus †Chubutisaurus del Corro, 1975
         2.2.1 Genus †Ligabuesaurus Bonaparte, González-Riga & Apesteguía, 2006
         2.2.2.1 Genus †Malarguesaurus González-Riga, Previtera & Pirrone, 2008
         2.2.2.2 †Titanosauria Bonaparte & Coria 1993