After Langer, 2001, Yates, 2005, and Ferigolo & Langer, 2006

<==o Dinosauria Owen, 1842 (dinosaurs & birds; dinosaurit ja linnut)
   |--o †Ornithischia Seeley, 1888 [†“Predentata” Marsh]
   |  |-- †Silesaurus opolensis Dzik, 2003
   |  `--+-- †Sacisaurus agudoensis Ferigolo & Langer, 2006
   |     `-- †Ornithischia Seeley, 1888
   `--o Saurischia Seeley, 1887 sensu lato
      |-- †Herrarasauria sensu Langer, 2001
      `--+-- †Eoraptor lunensis Sereno et al., 1993
         `--o Eusaurischia Langer, 2001 [Guaibasauridae Bonaparte, Ferigolo & Ribeiro, 1999 sensu Bonaparte, Brea, Schultz & Martinelli, 2006]
            |--+-- †Saturnalia tupiniquim Langer, Abdala, Richter & Benton, 1999
            |  `-- †Sauropodomorpha Huene, 1932
            `--o Theropoda Marsh, 1881b
               |-- †Guaibasaurus candelariensis Bonaparte, Ferigolo & Ribeiro, 1999 [Guaibasauridae Bonaparte, Ferigolo & Ribeiro, 1999]
               `--o Neotheropoda
                  |?- †Protoavis texensis Chatterjee, 1991
                  |-- †Coelophysoidea Welles, 1984 sensu Holtz, 1994
                  `--+-- †Neoceratosauria Novas, 1989
                     `-- Tetanurae Gauthier, 1986

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