Journal of Palaeogeography     2018 7 (4):  1-1    ISSN: 2095-3836  CN: 10-1041/P Spirematospermum wetzleri (Heer) Chandler (Zingiberaceae) from the Miocene of Weichang, Hebei Province, North China and the phytogeographic history of the genus Ya Lia,b, Tie-Mei Yia,c, Yue-Zhuo Lid, Cheng-Sen Lia a State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; b CAS Key Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, Jiangsu Province, China; c Beijing Institute of Science and Technology Information, Beijing Academy of Science and Technology, Beijing 100044, China; d Qian-Dao-Hu Museum of Natural History, Hangzhou 311700, Zhejiang Province, China Received: null  Revised: null  Online: null Supporting info