Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Reptilia Linnaeus, 1758 [paraphyletic] - reptiles
             Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
               Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
                 Order †Rhynchosauria Osborn, 1903 [monotypic]
                   Family †Rhynchosauridae Huxley, 1867
                     1 ?Genus †Eifelosaurus Jaekel, 1904
                     2 Genus †Howesia Broom, 1905
                     3 Genus †Mesosuchus Watson, 1912
                     4 Genus †Hyperodapedon Huxley, 1859
                     5 Genus †Mesodapedon Chatterjee, 1980
                     6 Genus †Rhynchosaurus Owen, 1842
                     7 Genus †Scaphonyx Woodward, 1908
                     8 Genus †Stenaulorhynchus Haughton, 1932