“Sleeping Dragon” Fossil May Link Dinosaurs, Birds

Paleontologists have discovered a duck-size dinosaur they believe died while catching some z’s. Researchers found the creature’s fossilized remains curled up with its head tucked under a forelimb, a pose that today is unique to sleeping and resting birds.

“I never expected we’d find a sleeping dinosaur in general, let alone with the tuck-in position,” said Xu Xing, a curator at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, China.