Lower Cretaceous Period, 120 million years BP. A complete Sinohydrosaurus lingyuanensis, also known as Hyphalosaurus lingyuanensis; supplied in a glazed display case. 107 grams, 16cm (6 1/2"). From an old Lincolnshire collection 1980s; from the Yixian Formation, Lingyuan, Liaoning Province in Northeast China. 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.