Samaras of Ventilago （Rhamnaceae） from the upper Miocene of Lincang, Yunnan, China and their phytogeographic implications  

作　　者：Ke-Nan Liu San-Ping Xie Steven R. Manchester Yun-Feng Wang Yang Shao Bin-Ke Li 

机构地区：[1]School of Earth Sciences and Key Laboratory of Mineral Resources in Western China(Gansu Province), Lanzhou University, Lanzhou 730000, China [2]Florida Museum of Natural History, University of Florida, Gainesville, FL 32611-7800, USA

出　　处：《Journal of Systematics and Evolution》2015年第3期252-258,共7页植物分类学报（英文版）

基　　金：We thank Hong Li, Lei Wang, Wen-Wen Wen, and Yi Yang for their help in the field. This work was supported by the National Natural Science Foundation of China （Grant Nos. 41172021 and 41302009）.

摘　　要：The genus Ventilago Gaertn. usually occurs in hot, dry, and low-altitude tropical environments. The fossil record of this genus is meager, so its origin and geographic history are still poorly understood. We describe a fossil winged fruit species--Ventilago lincangensis K. N. Liu ＆ S. P. Xie sp. nov. from the upper Miocene Bangmai Formation of Lincang city, Yunnan Province, China. The fossil conforms to the modern genus Ventilago in architecture of the prominent fruit wing including a prominent midvein, a set of minor longitudinally secondary veins extending the full length of the fruit and reticulate higher order venation. The elliptical fruit body at the base of the wing shows an equatorial rim and has a short pedicel. This is the first report of Ventilago fruits in China, and is significant for the investigation of the origin and evolutionary history of this genus.The genus Ventilago Gaertn. usually occurs in hot, dry, and low-altitude tropical environments. The fossil record of this genus is meager, so its origin and geographic history are still poorly understood. We describe a fossil winged fruit species--Ventilago lincangensis K. N. Liu ＆ S. P. Xie sp. nov. from the upper Miocene Bangmai Formation of Lincang city, Yunnan Province, China. The fossil conforms to the modern genus Ventilago in architecture of the prominent fruit wing including a prominent midvein, a set of minor longitudinally secondary veins extending the full length of the fruit and reticulate higher order venation. The elliptical fruit body at the base of the wing shows an equatorial rim and has a short pedicel. This is the first report of Ventilago fruits in China, and is significant for the investigation of the origin and evolutionary history of this genus.

关 键 词：Lincang MIOCENE phytogeography samara Ventilago. 

分 类 号：P534.621[天文地球—古生物学与地层学] Q949.756.2[天文地球—地质学]