A lower jaw from a Cretaceous parrot

@article{Stidham1998ALJ,
  title={A lower jaw from a Cretaceous parrot},
  author={Thomas A. Stidham},
  journal={Nature},
  year={1998},
  volume={396},
  pages={29-30}
}
  • T. Stidham
  • Published 5 November 1998
  • Geography, Environmental Science
  • Nature
All known Cretaceous bird fossils representing modern higher taxa are from the aquatic groups Anseriformes,, Gaviiformes,, Procellariiformes and Charadriiformes,. Here I describe a toothless avian dentary symphysis (fused jawbone) from the latest Cretaceous of Wyoming, United States. This symphysis appears to represent the oldest known parrot and is, to my knowledge, the first known fossil of a ‘terrestrial’ modern bird group from the Cretaceous. The existence of this fossil supports the… 

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References

Continental breakup and the ordinal diversification of birds and mammals

THE classical hypothesis for the diversification of birds and mammals proposes that most of the orders diverged rapidly in adaptive radiations after the Cretaceous/Tertiary (K/T) extinction event 65