地质通报2016，Vol.35Issue(12)：1976-1984,9.
河北围场早中新世藓类化石的植物地理学意义
The phytogeographic significance of Early Miocene mosses from Weichang area, Hebei Province
摘要
Abstract
Based on the study of fossils and modern distribution of mosses Leptodictyum riparium, Drepanocladus subtrichophyllus, Am⁃blystegium varium from the Guangfayong section, Weichang area, Hebei Province, the authors found that these mosses first appeared in Weichang area in the Early Miocene (22.1Ma), and they were possibly derived from Eastern Asia of Laurasian. Then, the mosses spread eastward to North America through Beringia and westward to Western Europe along Eurasia. Until the Holocene, they were mainly distributed in the North Hemisphere. Mosses of Leptodictyum riparium and Amblystegium varium further spread southward to South America and Australia since the Holocene, and gradually formed modern distribution framework, and the geographical distribu⁃tion framework of Drepanocladus trichophyllus was formed in Holocene. The phytogeographical significance concerning origin and spread of these mosses is discussed in this paper.关键词
河北围场/早中新世/藓类植物化石/地史分布Key words
Weichang area/Early Miocene/fossil mosses/phytogeography分类
天文与地球科学引用本文复制引用
郭彩清,李亚,吴鹏程,姚建新..河北围场早中新世藓类化石的植物地理学意义[J].地质通报,2016,35(12):1976-1984,9.基金项目
中国地质调查局项目（编号12120114026701、DD2016012、DD20160345）、科技部科技基础性工作专项（编号2015FY310100）、国家自然科学基金项目（批准号41402023、41472030）及中国地质科学院基本科研业务费专项 （）
