Lower Cretaceous Period, 120 million years BP. A complete Sinohydrosaurus lingyuanensis (also known as Hyphalosaurus lingyuanensis) from the Yixian Formation, Lingyuan, Liaoning Province in Northeast China, in a display case. 43 grams, 10.7cm (4 1/4"). From a Lincoln paleontological collection. Sinohydrosaurus lingyuanensis is a more recently discovered and described (Li Jianjun, 1999, Beijing Natural History Museum) marine lizard from the famous dinosaur fossil beds of Liaoning Province, People's Republic of China. Believed to have descended from a land-dwelling ancestor, Sinohydrosaurus was a freshwater aquatic reptile. Fine condition.