Early-Middle Permian palynoflora of Shandong Province,eastern North China  

作　　者：Tian-Tao Yin Shou-Jun Li Xiang-Yu Zhang Xiu-Li Zhao 

机构地区：[1]College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong Province,China [2]China Chemical Geology and Mine Bureau Shandong Geological Prospecting Institute,Ji'nan 250013,Shandong Province,China.

出　　处：《Journal of Palaeogeography》2020年第4期456-468,共13页古地理学报（英文版）

基　　金：This study was supported by the Open Foundation for the Modern Key Laboratory of Paleontology and Stratigraphy,Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences(Grant No.123104).

摘　　要：The Permian Taiyuan and Shanxi formations exposed in Shandong Province,eastern North China,contain abundant spores and pollen.In this study,a total of 42 genera and 146 species of spores and pollen from these Permian formations,native to northern China,are identified and related to the three epochs of the Permian Period(Cisuralian,Guadalupian,and Lopingian Epochs)as two assemblages:Assemblage I—the Laevigatosporites-Granulatisporites assemblage,inferred as the Cisuralian(~298.9-272.9 Ma);and,Assemblage II—the Gulisporites-Sinulatisporites assemblage,inferred as the Guadalupian(~272.9-259.1 Ma).Assemblage I represents growing ferns,whereas Assemblage II represents gymnosperms.The assemblage division and analysis indicated that the palaeoclimate of the study area during Early-Middle Permian time was dominated by warm and humid conditions,and later in the Middle Permian changed into moderately dry conditions.

关 键 词：PERMIAN Spores and pollen Vegetation succession Paleoclimate Environmental change Taiyuan Formation Shanxi Formation 

分 类 号：Q913.84[天文地球—古生物学与地层学] P534.46[生物学—古生物学]