After Carrano & Sampson, 1999

<==o Dinosauria
   |-- †Ornithischia Seeley, 1888
   `--o Saurischia Seeley, 1887
      |-- †Sauropodomorpha Huene, 1932
      `--o Theropoda Marsh, 1881b
         |?- †Eoraptor lunensis Sereno et al., 1993
         |?- †Herrarasauria sensu Sereno & Novas, 1992, 1994 and Novas, 1994
         `--+-- †Guaibasaurus candelariensis Bonaparte, Ferigolo & Ribeiro, 1999 [Guaibasauridae]
            `--o Neotheropoda
               |?- †Rileyasuchus bristolensis (Howard, 1888) Kuhn, 1961 [Rileya bristolensis Howard, 1888]
               |-- †Coelophysoidea Welles, 1984 sensu Holtz, 1994 [?=Podokesauroidea]
               `--+-- †Neoceratosauria Novas, 1989 
                  `-- Tetanurae Gauthier, 1986

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