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Galloanserae
superorder, birds
Nucleotide Protein
Crypturellus
genus, birds
Tinamus
Chauna
Anhimidae
(screamers), family, birds
Anseriformes
(ducks, geese and swans), order, birds
Neognathae
infraclass, birds
Tinamidae
family, birds
Tinamiformes
(tinamous), order, birds
Struthio
Struthionidae
Struthioniformes
(ostriches), order, birds
Rhea
Rheidae
Rheiformes
(rheas), order, birds
Dromaius
Dromaiidae
(emus), family, birds
Casuariiformes
(Emu and cassowaries), order, birds
Palaeognathae
Aves
(birds), class, birds
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