Sinosauropteryx is a compsognathid that was the first feathered non-avian dinosaur to be discovered. Sinosauropteryx was described in 1996, and lived in the Early Cretaceous Yixian Formation. In early 2010, it was revealed that it was the first dinosaur for which paleontologists knew its true color: reddish-orange with whitish-gray rings along the back, face, and the tail. It also had a raccoon-like mask on its eyes. In 1997, it was thought that Sinosauropteryx was the same as Compsognathus.