Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
Order Gruiformes Bonaparte, 1854
Family Aramidae Bonaparte, 1849 - limpkins
Family Cariamidae Bonaparte, 1853 - seriemas
Family Eurypygidae Selby, 1840 - sunbittern
Family Gruidae Vigors, 1825 - cranes
Family Heliornithidae Gray, 1841 - finfoots
Family Mesitornithidae Wetmore, 1960 - mesites
Family Otididae Gray, 1840 - bustards
Family Pedionomidae Gadow, 1893 - plains wanderer
Family Psophiidae Bonaparte, 1831 - trumpeters
Family Rallidae Vigors, 1825 - rails, waterhens, coots
Family Rhynochetidae Newton, 1868 - kagu
Family Turnicidae Gray, 1840 - buttonquails