Class Reptilia Linnaeus, 1758 - reptiles Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869 Order †Thecodontia Owen, 1859 see Division Archosauria Cope, 1869 Suborder †Pseudosuchia Zittel, 1887-1890 [paraphyletic?] Family †Aetosauridae Baur, 1887 see Family Stagonolepididae Lydekker, 1887