Journal of Palaeogeography     2018 7 (2):  117-129    ISSN: 2095-3836  CN: 10-1041/P SHRIMP zircon U-Pb ages from coal beds across the Permian-Triassic boundary, eastern Yunnan, southwestern China Juan Wanga,b, Long-Yi Shaoa, Hao Wanga, Baruch Spiroc, David Larged a State Key Laboratory of Coal Resources and Safety Mining, and Department of Resources and Earth Sciences, China University of Mining and Technology (Beijing), Beijing 100083, China; b Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, Henan Province, China; c Department of Mineralogy, The Natural History Museum, London SW7 5BD, United Kingdom; d Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom Received: 2016-01-10  Revised: null  Online: null Supporting info