This work was supported by the State Key Laboratory of Paleobiology and Stratigraphy,Chinese Academy of Sciences(Grant No.023104);the Major Basic Research Projects of Ministry of Science and Technology,China(Grant No.G200077708).)
The Tsagaanbulag Formation of the Ulaan-Shand section in the Shine Jinst area was assigned to Silurian (Wenlock-Pridoli) previously. But the present authors have found some very important conodonts, including Lanea om...