泥河湾盆地叶沟晚上新世贺风三趾马动物群及其生物地层学意义
A Late Pliocene Hipparion houfenense fauna from Yegou,Nihewan Basin and its biostratigraphic significance
摘要
Abstract
Currently,there are still different views regarding the chronology of the Late Cenozoic deposits in the Nihewan Basin,which results from the contradiction between biostratigraphic correlations based on mammalian fossils and magnetostratigraphic dating results.Biostratigraphic correlations indicate that the aeolian red clay exposed in the Sanggan River canyon,the fluvio-lacustrine red clay with sands and gravels,and the sandy clay of swamp facies on both sides of the lower reaches of the Huliu River belong to the Upper Pliocene,whereas the magnetostratigraphic dating usually correlates them to the Lower Pleistocene.In October 2011,a collection of mammalian fossils was unearthed from a block of collapsed deposits at Yegou in the Nihewan Basin,which is about 300 m north of the Laowogou section that is well known for the Pliocene mammalian fossils from its lower part.The Yegou fossils are identified herein as 10 species in 9 genera:Nyctereutes tingi,N.sinensis,Pachycrocuta pyrenaica,Homotherium sp.,Hipparion(Plesiohipparion)houfenense,Dicerorhinus sp.,Muntiacus sp.,Axis shansius,Gazella blacki,and Paracamelus sp.The fauna is quite different from the classic Early Pleistocene Nihewan Fauna in composition and provides new evidence for the existence of the Upper Pliocene in the Nihewan Basin.Based on a systematic description of the fauna,its composition and geological age are discussed,and the compositional features of large mammals of the Late Pliocene and the Early Pleistocene mammalian faunas in the Nihewan Basin are summarized.关键词
泥河湾盆地/上上新统/大型哺乳动物/贺风三趾马/生物地层学/磁性地层学Key words
Nihewan Basin/Upper Pliocene/large mammals/Hipparion(Plesiohipparion)houfenense/biostratigraphy/magnetostratigraphy分类
生物科学引用本文复制引用
刘金毅,张颖奇,迟振卿,王永,杨劲松,郑绍华..泥河湾盆地叶沟晚上新世贺风三趾马动物群及其生物地层学意义[J].古脊椎动物学报,2022,60(4):278-323,46.基金项目
中国科学院战略性先导科技专项(B类)(编号:XDB26000000)、国家自然科学基金(批准号:41772018,41172150)和中国地质科学院地质研究所基本科研业务费项目(编号:J1001)资助.This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No:XDB26000000),National Science Foundation of China(Grants No:41772018,41172150)and Basic Scientific Research Fund of the Institute of Geology,Chinese Academy of Geological Sciences(No:J1001).Prof.YAO Pei-Yi and Prof.YAO Zhen of Institute of Geology,Chinese Academy of Geological Sciences,Mr.CHEN Xing-Qiang of China University of Geosciences participated in the field investigation and fossil collection.Mr.WANG Zhao of Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences(IVPP)participated in the excavation and prepared the fossils.Mr.GAO Wei of IVPP photographed the specimens.Prof.QIU Zhang-Xiang of IVPP gave valuable comments and suggestions during the preparation of the manuscript.Prof.ZHANG Zhao-Qun and Prof.LI Qiang of IVPP provided helpful comments that improved the content of the article when reviewing the manuscript.We would like to express our profound gratitude to these institutions and individuals. （B类）
