Classification of Gould and Quitmyer 2005
Fm. †Phorusrhacidae Ameghino 1889 [terror bird]
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Subfm. †Brontornithinae Moreno and Mercerat 1891
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Subfm. †Mesembriornithinae
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G. †Mesembriornis Moreno 1889
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†Mesembriornis incertus Rovereto 1914
†Mesembriornis milneedwardsi Moreno 1889
Subfm. †Patagornithinae Mercerat 1897
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Subfm. †Phorusrhacinae Ameghino 1899
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Subfm. †Psilopterinae Dolgopol de Saez 1927
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G. †Psilopterus Moreno and Mercerat 1891
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†Psilopterus affinis Ameghino 1899
†Psilopterus bachmanni Moreno and Mercerat 1891
†Psilopterus colzecus Tonni and Tambussi 1988
†Psilopterus lemoinei Moreno and Mercerat 1891
Or. Ralliformes
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Subor. Cariamae Fürbringer 1888
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Fm. Cariamidae Bonaparte 1853 [seriema]
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Fm. †Phororhacidae Ameghino 1889 [terror bird]