Class Reptilia Linnaeus, 1758 - reptiles
   Subclass Archosauria Cope, 1869 see Division Archosauria Cope, 1869
     Order Crocodylia Wagler, 1830 - crocodiles
       1 Suborder †Protosuchia Mook, 1934 see Order Protosuchia Brown, 1934
       2 Suborder †Mesosuchia Huxley, 1875
       3 Suborder Eusuchia Huxley, 1875 see Clade Eusuchia Huxley 1875 {Brochu 2003}
       4 Suborder †Sebecosuchia (Colbert, 1946)
       5 Suborder †Thalattosuchia Fraas, 1901 [monotypic] see Order Thalattosuchia Fraas, 1901