Rheidae is a family of flightless ratite birds which first unambiguously appeared during the Miocene epoch. It is today represented by the sole living genus Rhea, but also contains several extinct genera.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0