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Autor: Wikipedia Loves Art participant "The_Wookies", Licencja: CC BY 2.5
Cast skeleton of primitive bird
This cast skeleton was produced by Dr. Lary D. Martin of University of Kansas, a leading authority on primitive birds, by pulling molds off casts of most of the Archaeopteryx specimens. The skeleton has been mounted in an arboreal (tree-climbing) posture. Recent research on bird claws shows that claws of Archaeopteryx most closely match the claws of anoreal birds, rather those of ground-living birds. Note the three-clawed wing of Archaeopteryx, a condition not found in living birds.
Autor: User:Captmondo, Licencja: Copyrighted free use
Specimen of Turfanosuchus dabanensis, on display at the Paleozoological Museum of China.