2015 34 (4):  879-885    ISSN: 1004-5589:  CN: 22-1111/P Discovery of petrified wood from Lower Cretaceous Jiufotang Formation in Yixian of western Liaoning，NE China and its significance WANG Xiu-Qin, TIAN Ning, WANG Yong-Dong, ZHU Zhi-Peng, LI Yu-Ling 1. Department of Biochemical Engineering，Chaoyang Teachers College，Chaoyang 122000，Liaoning，China; 2. College of Palaeontology，Shenyang Normal University，Shenyang 110034，China; 3. Nanjing Institute of Geology and Palaeontology，Chinese Academy of Sciences，Nanjing 210008，China; 4. Key Laboratory of Economic Stratigraphy and Palaeogeography，Chinese Academy of Sciences，Nanjing 210008，China; 5. State Key Laboratory of Palaeobiology and Stratigraphy，Nanjing Institute of Geology and Palaeontology， Chinese Academy of Sciences，Nanjing 210008，China; 6. Key Laboratory for Evolution of Past Life in Northeast Asia，Ministry of Land and Ｒesources，Shenyang 110034，China Received null  Revised null  Online 2015-12-25 Reference   Corresponding author: