Order Ralliformes Reichenbach, 1854 - marsh birds and allies
Count: [†g] 12f;11g; ‡3g; †7f;67g
   Suborder Ralli Reichenbach - rails and allies
  Count: [†g] 1f;8g; ‡3g; †1f;26g
     Family †Idiornithidae Brodkorb
    Count: [†g] †2g
       Genus †Elaphrocnemus Milne-Edwards, 1892
      Count: -
       Genus †Idiornis Oberholser, 1899
      Count: -