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Temporal range: Eocene-Holocene 40–0 Ma
Ostriches cape point cropped.jpg
Ostrich (Struthio camelus), male and female
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Struthioniformes
Latham, 1790
Family: Struthionidae
Vigors, 1825[1]
Type species
Struthio camelus
Linnaeus, 1758


Struthionidae is a family of flightless ratite birds which first appeared during the Eocene epoch. It is today represented by the sole living genus Struthio, but also contains several extinct genera.[2] Traditionally the order Struthioniformes contain the world's ratites, but recent genetic analysis has found that the group is not monophletyic, as it paraphyletic in respect to the tinamous.[3][4]


  1. ^ Brands, Sheila (14 Aug 2008). "Taxon: Genus Struthio". Project: The Taxonomicon. Retrieved 12 Jun 2012. 
  2. ^ Mayr, G. (2009). Paleogene fossil birds. Springer.
  3. ^ Hackett, S.J. et al. (2008) A Phylogenomic Study of Birds Reveals Their Evolutionary History. Science, 320, 1763.
  4. ^ Yuri, T. (2013) Parsimony and model-based analyses of indels in avian nuclear genes reveal congruent and incongruent phylogenetic signals. Biology, 2:419–44.