2013 32 (3):  447-462    ISSN: 1004-5589:  CN: 22-1111/P Main geological background during the evolution of Jehol Biota from western Liaoning ZHANG Li-Jun-1, 2 1. Ｒesearch Center of Paleontology ＆ Stratigraphy，Jilin University，Changchun 130026，China; 2. Bureau of Fossil Protection and Administration of Liaoning，Shenyang 110032，China Received null  Revised null  Online 2013-09-25 Reference   Corresponding author: