Class Reptilia Linnaeus, 1758 - reptiles
   Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869
     Order †Ornithischia Seeley, 1887
       Suborder †Ankylosauria Osborn, 1923 see Infraorder Ankylosauria Osborn, 1923
         1 Family †Acanthopholididae Nopcsa, 1915 see Family Nodosauridae Marsh, 1890
         2 Family †Nodosauridae Marsh, 1890
         3 Family †Syrmosauridae Maleev, 1952 see Family Ankylosauridae Brown, 1908