Order Ralliformes Reichenbach, 1854 - marsh birds and allies
   Suborder Cariamae (Wagler, 1830) Fürbringer, 1888 - seriemas and allies
     1 Family †Cunampaiidae Rusconi
     2 Family †Phorusrhacidae Ameghino, 1899
     3 Family Cariamidae Bonaparte, 1853 - seriemas