Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval. see Clade Archosauromorpha von Huene 1946 [Gauthier 2020]
   Archosauriformes Gauthier 1994, nom. cl. inval. see Clade Archosauriformes Gauthier 1994 [Gauthier 2020]
     Crurotarsi Sereno & Arcucci 1990
       Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval. see Clade Archosauria Cope 1869 [Gauthier & Padian 2020]
         Avemetatarsalia Benton 1999 see Clade Ornithodira Gauthier 1986
           Ornithodira Gauthier 1986 see Clade Ornithodira Gauthier 1986 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
             Dinosauromorpha Benton 1985 [Sereno 1991], nom. cl. inval. see Clade Dinosauromorpha Benton 1985 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
               †Lagerpetidae Arcucci 1986 [Nesbitt, Irmis, Parker, Smith, Turner & Rowe 2009] see Clade Lagerpetidae Arcucci 1986 [Ezcurra, Nesbitt, Bronzati, Dalla Vecchia, Agnolin, Benson, ..., Langer 2020]
                 Genus †Lagerpeton Romer, 1971
                   1 †Lagerpeton chanarensis Romer, 1971