Order Crocodylia Wagler, 1830 - crocodiles
   1 Suborder †Sphenosuchia Bonaparte, 1971 see Order Sphenosuchia Bonaparte, 1972
   2 Suborder †Protosuchia Mook, 1934 see Order Protosuchia Brown, 1934
   3 Suborder †Mesosuchia Huxley, 1875
   4 Suborder Eusuchia Huxley, 1875 see Clade Eusuchia Huxley 1875 {Brochu 2003}