The Chinese province famous for its feathered dinosaur fossils is Liaoning. Its exceptionally preserved fossil beds have transformed scientists’ understanding of dinosaur feathers and the origin of birds.
Liaoning is in northeastern China, near the borders with North Korea and the provinces of Jilin and Hebei. Much of its fame comes from the Jehol Biota, a group of Early Cretaceous fossil deposits that preserve bones, feathers, skin impressions, plants, insects, and other organisms in fine detail.
Important discoveries from Liaoning include Caudipteryx, Sinornithosaurus, and many specimens of feathered dinosaurs. The Yixian and Jiufotang formations are especially significant, with fossils dating roughly from 130 to 120 million years ago. Volcanic ash and fine lake sediments helped bury organisms rapidly and preserve delicate structures.
Henan, Yunnan, and Sichuan also have important Chinese fossil sites, but Liaoning is the province most strongly associated with feathered dinosaur discoveries. Its fossils helped establish that feathers were widespread among theropod dinosaurs, not exclusive to modern birds.