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<==o †Idiornithidae
|?- †Gypsornis cuvieri
|-- †Occitaniavis elatus (Milne-Edwards, 1892) [Geranopsis elatus Milne-Edwards, 1892]
|-- †Oblitavis insolitus
|-- †Propelargus cayluxensis
|--o †Elaphrocnemus
| |-- †E. phasianus
| |-- †E. crex
| |-- †E. bordkorbi
| `-- †E. sp.
`--o †Idiornis
|-- †I. tuberculata
|-- †I. gallicus
|-- †I. cursor
|-- †I. minor
|-- †I. gaillardi
|-- †I. gracilis
`-- †I. itardiensis
Feduccia, A., 1996: The Origin and Evolution of Birds.
–Yale University Press, New Haven, 1996, x-420
Göhlich, U. B., 2003: A new crane (Aves: Gruidae) from the Miocene of Germany.
–Journal of Vertebrate Paleontology: Vol. 23, #2, pp. 387-393
Olson, S. L., 1985: The fossil record of birds. 79-239.
in Farner, D., King, J. & Parkes, K. (eds.), 1985: Avian Biology. vol VIII.
–Academic Press, New York. 1985.
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