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Genus Raja
- type genus of the family Rajidae
Genus Protoavis
- extinct primitive birds of the Triassic period; 70 million years before archaeopteryx
Genus Ibero-Mesornis
- a genus of fossil bird of the subclass Archaeornithes
Genus Struthio
- type genus of the Struthionidae: African ostriches
Genus Casuarius
- type and sole genus of the Casuaridae: cassowaries
Genus Dromaius
- a genus of birds in the order Casuariiformes