Rheiformes
| Rheids Temporal range: Paleocene-Holocene 56–0 Ma |
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| Greater rhea, Rhea americana | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Clade: | Notopalaeognathae |
| Order: |
Rheiformes Forbes, 1884 |
| Family: |
Rheidae Bonaparte, 1853 |
| Type species | |
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Rhea americana Linnaeus, 1758 |
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| Family | |
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| Synonyms | |
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Rheidae is a family of flightless ratite birds which first appeared in the Paleocene. It is today represented by the sole living genus Rhea, but also contains several extinct genera.
Order Rheiformes (Forbes 1884) Furbringer 1888 [Rheimorphae Bonaparte 1849; Rheae Forbes 1884]
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