Class [Reptilia] Linnaeus, 1758 - reptiles
   Subclass †Placodontomorpha Kuhn, 1968
     Order †Placodontia Owen, 1859
       Suborder †Placodontoidea Peyer & Kuhn-Schnyder, 1955 see Order Placodontia Owen, 1859
         1 Family †Paraplacodontidae Peyer & Kuhn-Schnyder, 1955 see Family Placodontidae Cope, 1871
         2 Family †Placodontidae Cope, 1871