Phylum [Vertebrata] Lamarck, 1801 see Infraphylum Vertebrata Lamarck, 1801 Class Reptilia Linnaeus, 1758 - reptiles Subclass †uncertain Order †Placodontia Owen, 1859 Family †Cyamodontidae Nopcsa, 1923 Genus †Placochelys Jaekel, 1902