#order_Rheiformes__Rheiformes  a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas
  supertype:  #animal_order  the order of animals
  member of:  #class_Aves
  member:  #family_Rheidae__Rheidae  a family of birds coextensive with the order Rheiformes
     member:  #genus_Rhea  type genus of the Rheidae; large tall flightless South American birds similar to but smaller than ostriches
        member:  #Rhea_americana__rhea  larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia
     member:  #genus_Pterocnemia__Pterocnemia  a genus of birds of the family Rheidae
        member:  #rhea__nandu__Pterocnemia_pennata  smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Straits of Magellan

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