Gruiformes
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Subclass: Neornithes (2,057 genera / 9,672 species)
Infraclass: Eoaves
Parvclass: Passerae
Superorder: Passerimorphae
Order: Gruiformes (53/196 – sunbittern, bustards, crowned-cranes, typical cranes, limpkin, sungrebes, trumpeters, kagu, seriemas, rails, gallinules, coots, mesites)
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Suborder: Grui
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Infraorder: Eurypygides
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Family: Eurypygidae (1/1 – sunbittern)
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Family: Otididae (6/25 – bustards)
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Parvorder: Gruida
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Superfamily: Gruoidea
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Family: Gruidae (2/15)
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Subfamily: Balearicinae (crowned-cranes)
Subfamily: Gruinae – (typical cranes)
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Tribe: Aramini (limpkin)
Tribe: Heliornithini (sungrebes)
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Family: Psophiidae (1/3 – trumpeters)
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Family: Cariamidae (2/2 – seriemas)
Family: Rhynochetidae (1/1 – kagu)
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Family: Rallidae (34/142 – rails, gallinules, coots)
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Family: Mesitornithidae (2/3 – mesites, monias, roatelos)
