Order Accipitriformes Vieillot - diurnal birds of prey see Order Falconiformes Sharpe, 1874
   Suborder Sarcoramphi Ridgway - American vultures
     Family Vulturidae Illiger, 1811 - American vultures see Family Cathartidae Lafresnaye, 1839
       Subfamily †Teratornithinae L. Miller see Family Teratornithidae
         1 Genus †Teratornis L. Miller
         2 Genus †Cathartornis L. Miller, 1910