Early Miocene Mosses from Weichang, North China, and their Environmental Significance  

作　　者：GUO Caiqing YAO Jianxin WU Pengcheng LI Chengsen 

机构地区：[1]Key Laboratory of Stratigraphy and Paleontology,Institute of Geology, Chinese Academy of Geological Sciences [2]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany, Chinese Academy of Sciences

出　　处：《Acta Geologica Sinica(English Edition)》2013年第6期1508-1519,共12页地质学报（英文版）

基　　金：supported by grants from China Geological Survey (No. 1212011120116);the Natural Science Foundation of China (Nos. 41072022 and 41210001);the International S & T Cooperation Project of China (No. 2009DFA32210);the Outlay Research Fund of the Institute of Geology, Chinese Academy of Geological Sciences (No. J1213);a contribution to a bilateral research project supported by the Chinese Ministry of Science and Technology and the Belgian Federal Science Policy Office (BL/36/C54)

摘　　要：Twenty-seven moss specimens collected from the Guangfayong section （Early Miocene,22.1 Ma） of the Weichang District,North China were investigated in the present study.Based on the morphological and anatomical features of gametophytes,all specimens were found to belong to three species：Leptodictyum riparium,Drepanocladus subtrichophyllus sp.nov.,and Amblystegium varium,all of which belong to the family Amblystegiaceae.The microhabitats and living environments of fossil mosses were also investigated based on comparison with living mosses.The results suggest that these mosses grew primarily at the edges of rivers,streams,and lakes and favored being submerged in streams or lakes in the Weichang District in the Early Miocene.Twenty-seven moss specimens collected from the Guangfayong section （Early Miocene,22.1 Ma） of the Weichang District,North China were investigated in the present study.Based on the morphological and anatomical features of gametophytes,all specimens were found to belong to three species：Leptodictyum riparium,Drepanocladus subtrichophyllus sp.nov.,and Amblystegium varium,all of which belong to the family Amblystegiaceae.The microhabitats and living environments of fossil mosses were also investigated based on comparison with living mosses.The results suggest that these mosses grew primarily at the edges of rivers,streams,and lakes and favored being submerged in streams or lakes in the Weichang District in the Early Miocene.

关 键 词：fossil mosses Amblystegiaceae Early Miocene paleoenvironment and paleoclimate North China 

分 类 号：Q914[天文地球—古生物学与地层学]