Fruits of Scirpus(Cyperaceae) from the early Miocene of Weichang,Hebei Province,North China and their palaeoecological and palaeobiogeographical implications  

作　　者：Ping Lu Ya Li Jian-Wei Zhang Xiao-Qing Liang Yue-Zhuo Li Cheng-Sen Li 

机构地区：[1]School of Chemistry,Biology,Environment,Yuxi Normal University [2]CAS Key Laboratory of Economic Stratigraphy and Palaeogeography,Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment,Chinese Academy of Sciences [3]Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences [4]Qian-Dao-Hu Museum of Natural History [5]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences

出　　处：《Journal of Palaeogeography》2019年第2期142-149,共8页古地理学报（英文版）

基　　金：supported by grants from the National Natural Science Foundation of China(Nos.31760057,31860049,41502017,41072022)

摘　　要：This paper describes the fossil fruits of Scirpus weichangensis X.Q.Liang,sp.nov.from the early Miocene of Guangyongfa Village,Weichang County,Hebei Province,North China.The fossil fruits are obovate in shape and their lateral sections are plumply trigonous.The cell walls of the surface are straight.The persistent stout bristles have downward-directed barbellae in distal 1/2.The occurrence of the fossil Scirpus indicates that Guangfayong was a wetland in the early Miocene.Based on the fossil data,the genus likely originated in Western Siberia in the Oligocene,spread during the Miocene,and was finally distributed worldwide in the Holocene.This paper describes the fossil fruits of Scirpus weichangensis X.Q.Liang,sp.nov.from the early Miocene of Guangyongfa Village,Weichang County,Hebei Province,North China.The fossil fruits are obovate in shape and their lateral sections are plumply trigonous.The cell walls of the surface are straight.The persistent stout bristles have downward-directed barbellae in distal 1/2.The occurrence of the fossil Scirpus indicates that Guangfayong was a wetland in the early Miocene.Based on the fossil data,the genus likely originated in Western Siberia in the Oligocene,spread during the Miocene,and was finally distributed worldwide in the Holocene.

关 键 词：SCIRPUS Early MIOCENE PALAEOECOLOGY PALAEOBIOGEOGRAPHY Weichang 

分 类 号：P[天文地球]