Lower Cretaceous Period, 125 million years BP. A complete Sinohydrosaurus lingyuanensis, also known as Hyphalosaurus lingyuanensis, on a matrix; supplied in a glazed display box. 290 grams total, 13.3cm (case: 21 x 16cm) (5 1/4 (8 1/4 x 6 1/4')"). From an old Lincolnshire collection collected 1980s; from the of 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.