Order †Thecodontia Owen, 1859 see Division Archosauria Cope, 1869 Suborder †Proterosuchia Broom, 1906 see Order Proterosuchia Broom, 1906 Family †Proterosuchidae von Huene, 1908 Genus †Chasmatosaurus Haughton, 1924 see Genus Proterosuchus Broom, 1903