Diapsida Osborn 1903 [Laurin 1991] see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
Count: -
   Archosauromorpha xxxHuene 1946 [Gauthier, Kluge & Rowe 1988] see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
  Count: -
     Archosauria Cope, 1869
    Count: -
       Crocodylotarsi Benton & Clark, 1988 see Clade Crurotarsi Sereno & Arcucci 1990
      Count: -
         Suchia Krebs 1974 [Sereno 1991]
        Count: -
           †Pseudosuchia Zittel 1887-1890 [Gauthier & Padian 1985]
          Count: -
             1 †aetosaurs Marsh 1884 [Heckert & Lucas 2000] see Order Aetosauria Nicholson & Lydekker, 1889
            Count: -
             2 †Rauisuchia Bonaparte, 1982 - rauisuchians
            Count: †2f