Order Ralliformes Reichenbach, 1854 - marsh birds and allies
   01 Suborder Ralli Reichenbach - rails and allies
   02 Suborder Heliornithes Sharpe - finfoots
   03 Suborder Rhynocheti Sharpe - kagu see Infraorder Rhynochetides Sharpe, 1891
   04 Suborder Eurypygae Fürbringer, 1888 - sun-bitterns
   05 Suborder Mesitornithes Wetmore - roatelos see Order Turniciformes Huxley, 1868
   06 Suborder Turnices Huxley - hemipodes see Order Turniciformes Huxley, 1868
   07 Suborder †Gastornithes (Stejneger) P. Brodkorb, 1967 see Order Diatrymiformes Shufeldt, 1913
   08 Suborder Grues Bonaparte, 1854 - cranes, limpkins, trumpeters
   09 Suborder Cariamae (Wagler, 1830) Fürbringer, 1888 - seriemas and allies
   10 Suborder Otides Wagler - bustards and allies see Infraorder Otidides