Rheidae
| Rheids | |
|---|---|
| Greater rhea, Rhea americana | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Aves | 
| Infraclass: | Palaeognathae | 
| Clade: | Notopalaeognathae | 
| Order: | Rheiformes | 
| Family: | Rheidae Bonaparte, 1853 | 
| Type species | |
| Rhea americana | |
| Genera | |
| 
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| Synonyms | |
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Rheidae /ˈriːɪdiː/ 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.