Phylum Chordata Bateson, 1885 - chordates
Count: -
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
  Count: -
     Class Reptilia Linnaeus, 1758 - reptiles
    Count: [*] 4o42f; †13o36f
       Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869
      Count: [*] 1o1f; †4o4f
         Order †Ornithischia Seeley, 1887
        Count: -
           Suborder †Ankylosauria Osborn, 1923 see Infraorder Ankylosauria Osborn, 1923
          Count: -