Classification of Moreno and Mercerat 1891
Cl. Aves Linnaeus 1758 [bird]
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Or. †Stereornithes Moreno and Mercerat 1891
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Fm. †Brontornithidae Moreno and Mercerat 1891
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G. †Brontornis Moreno and Mercerat 1891
G. †Rostrornis Moreno and Mercerat 1891
Invalid names: Darwinornithidae Moreno and Mercerat 1891 [empty], Dryornithidae Moreno and Mercerat 1891 [empty], Stereornithidae Moreno and Mercerat 1891 [empty]
Invalid names: Struthiones [empty]
G. †Palaeociconia Moreno 1889
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†Palaeociconia australis Moreno 1889
†Palaeociconia cristata Moreno and Mercerat 1891
Or. Impennes Ameghino 1905
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Fm. Spheniscidae Bonaparte 1831
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G. †Palaeospheniscus Moreno and Mercerat 1891
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†Palaeospheniscus antarcticus Moreno and Mercerat 1891
†Palaeospheniscus menzbieri Moreno and Mercerat 1891
†Palaeospheniscus patagonicus Moreno and Mercerat 1891
Subor. Accipitres Linnaeus 1758
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Fm. Cathartidae Lafresnaye 1839 [New World vulture]
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G. †Psilopterus Moreno and Mercerat 1891
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†Psilopterus australis Moreno and Mercerat 1891
†Psilopterus communis Moreno and Mercerat 1891
†Psilopterus intermedius Moreno and Mercerat 1891
Fm. Falconidae Vigors 1824
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