Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids

@article{Xu2004BasalTF,
  title={Basal tyrannosauroids from China and evidence for protofeathers in tyrannosauroids},
  author={Xing Xu and M. Norell and Xuewen Kuang and X. Wang and Qi Zhao and Chengkai Jia},
  journal={Nature},
  year={2004},
  volume={431},
  pages={680-684}
}
  • Xing Xu, M. Norell, +3 authors Chengkai Jia
  • Published 2004
  • Biology, Medicine
  • Nature
  • Tyrannosauroids are one of the last and the most successful large-bodied predatory dinosaur groups, but their early history remains poorly understood. Here we report a new basal tyrannosauroid from the Early Cretaceous Yixian Formation of western Liaoning, China, which is small and gracile and has relatively long arms with three-fingered hands. The new taxon is the earliest known unquestionable tyrannosauroid found so far. It shows a mosaic of characters, including a derived cranial structure… CONTINUE READING
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