reptiles Linnaeus 1758 [Laurin & Reisz 2020] see Class Reptilia Linnaeus, 1758
   Pan-Archosauria Gauthier 2020
     Crocopoda Ezcurra 2016
       Archosauriformes Gauthier 1994 [Gauthier 2020]
         1 †Proterosuchidae Broom, 1906
         2.1 Genus †Antarctanax Peecook, Smith & Sidor, 2019
         2.2.1 Genus †Sarmatosuchus Sennikov, 1994
         2.2.2.1 Genus †Cuyosuchus Reig, 1961
         2.2.2.2.1 †Erythrosuchidae Watson, 1917
         2.2.2.2.2 Eucrocopoda Ezcurra 2016