The origin of birds and their flight.

@article{Padian1998TheOO,
  title={The origin of birds and their flight.},
  author={Kevin Padian and Luis Mar{\'i}a Chiappe},
  journal={Scientific American},
  year={1998},
  volume={278 2},
  pages={
          38-47
        }
}
Anchiornis Microraptor Archaeopteryx Jeholornis Sapeornis Zhongjianornis Confuciusornis Alectoris Columba Larus Buteo Anchiornis Microraptor Archaeopteryx Jeholornis Sapeornis Zhongjianornis Confuciusornis Alectoris Columba Larus Buteo
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