The new progress has been made in the Jehol biota research in West Liaoning Province , China . Dr.Ji Qiang of the CGS has found a coelurosaur fossil, which was nominated as Huaxiagnathus orientalis . The discovery again proved the theory that small theropod dinosaur was evolved from the birds. In the Jingangshan area in the Yixian County, Liaoning, t he paleontologists have found the first known pterosaur embryo in the world, which was thought exactly as what the flyling reptiles once did.