Order Ralliformes Reichenbach, 1854 - marsh birds and allies
Count: [†g] 12f;11g; ‡3g; †7f;67g
   Suborder †Gastornithes (Stejneger) P. Brodkorb, 1967 see Order Diatrymiformes Shufeldt, 1913
  Count: [†g] †2f;4g
     Family †Diatrymidae Shufeldt, 1913
    Count: [†g] †1g
       Genus †Diatryma Cope, 1876
      Count: -