A cloacal opening in a non-avian dinosaur

  title={A cloacal opening in a non-avian dinosaur},
  author={J. Vinther and R. Nicholls and D. A. Kelly},
  journal={Current Biology},
The Frankfurt specimen of Psittacosaurus sp. (SMF R 4970) from the Early Cretaceous Jehol deposits of Liaoning (Figure S1) exhibits the best preservation of scale-clad integument in any non-avian dinosaur yet described1. Preservation of colour patterns and countershading allowed a detailed reconstruction of this individual's physical appearance suggesting it was camouflaged for life in a shaded lighting environment2. It was previously noted that the cloacal region was preserved2, but its… Expand