A lower jaw from a Cretaceous parrot
Abstract
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 hypothesis, based on molecular divergence data,, that most or all of the major modern bird groups were present in the Cretaceous.
- Publication:
-
Nature
- Pub Date:
- November 1998
- DOI:
- 10.1038/23841
- Bibcode:
- 1998Natur.396...29S