A new troodontid dinosaur from China with avian-like sleeping posture

  title={A new troodontid dinosaur from China with avian-like sleeping posture},
  author={Xing Xu and Mark A. Norell},
  • Xing Xu, M. Norell
  • Published 14 October 2004
  • Biology, Environmental Science, Geography
  • Nature
Discovering evidence of behaviour in fossilized vertebrates is rare. Even rarer is evidence of behaviour in non-avialan dinosaurs that directly relates to stereotypical behaviour seen in extant birds (avians) and not previously predicted in non-avialan dinosaurs. Here we report the discovery of a new troodontid taxon from the Early Cretaceous Yixian Formation of western Liaoning, China. Numerous other three-dimensionally preserved vertebrate fossils have been recovered recently at this locality… 

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