The first discovery of the middle Lochkovian (Devonian) conodonts in South Gobi, Mongolia  

作　　者：Ch.Minjin W.Ziegler J.Munchtsetseg J.Gereltsetseg J.Undarya 

机构地区：[1]Mongolian University of Science and Technology,Senckenberg Museum,Mongolian University of Science and Technology,Mongolian University of Science and Technology,Mongolian University of Science and Technology School of Geology,46/520,Ulaanbaatar,Mongolia,Senckenberganlage 25,D-60325,Frankfurt/M,Germany,School of Geology,46/520,Ulaanbaatar,Mongolia,School of Geology,46/520,Ulaanbaatar,Mongolia,School of Geology,46/520,Ulaanbaatar,Mongolia

出　　处：《Science China Earth Sciences》2005年第1期48-52,共5页中国科学（地球科学英文版）

基　　金：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).)

摘　　要：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 omoalpha, Amydrotaxis johnsoni, "Ozarkodina"planililingua, Pedavis sp., from the Tsagaanbulag and Amansair formations, clearly indicating that these two formations should be assigned to middle Lochkovian which are widely distributed in China and Mongolia. The existence of the marine Wenlockain and early Ludlovian deposits in Mongolia is a noteworthy problem.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 omoalpha, Amydrotaxis johnsoni, 'Ozarkodina' planililingua, Pedavis sp., from the Tsagaanbulag and Amansair formations, clearly indicating that these two formations should be assigned to middle Lochkovian which are widely distributed in China and Mongolia. The existence of the marine Wenlockain and early Ludlovian deposits in Mongolia is a noteworthy problem.

关 键 词：Tsagaanbulag Formation  conodonts  middle Lochkovian  SOUTH Gobi  Mongolia. 

分 类 号：Q911[天文地球—古生物学与地层学]