李春晓,王世骐,郝呈禄,陈光庭,孙博阳,郑妍,许泗建

• 1:中国科学院古脊椎动物与古人类研究所中国科学院脊椎动物演化与人类起源重点实验室
• 2:中国科学院生物演化与环境卓越创新中心
• 3:中国科学院大学
• 4:青海省地质调查院

摘要(Abstract)：

西宁盆地的间型嵌齿象(Gomphotherium connexum)和维曼嵌齿象(Gomphotherium wimani)的种型群材料是中国最早的一批有出土地点记录的长鼻类化石。这些化石在西宁盆地新生代地层划分和对比中起到了基础性的作用,但长期以来,对二者种型群材料产出的精确地点和层位并不完全清楚。受此影响,对二者生物年代及演化阶段的研究,以及西宁盆地的地层对比存在很多争议。对西宁盆地间型嵌齿象和维曼嵌齿象种型群化石点(即正型地点)进行了多方考证,获取了化石地点的准确位置:吊沟和八盘山。通过地层对比,证明两种嵌齿象的正型地点出自同一层位——关家山组(原咸水河组下部)底部河道相的绿色砂砾岩层中,两者的时代相同。依据已有的古地磁结果,间型嵌齿象和维曼嵌齿象的正型地点的年代应为16~15 Ma。通过形态学分析进一步阐释两种嵌齿象的系统演化关系,认为二者仅仅代表不同的演化方向,而不是原始与进步的演化阶段。这一方面对中国古生物史的研究有重要意义,另一方面为探讨嵌齿象类群演化的问题提供了关键性的年代学数据,也对西宁盆地的大地构造和沉积环境演化等方面提供了重要的生物地层学证据。

关键词(KeyWords)： 地层对比;生物年代;嵌齿象;中中新世;西宁盆地;青海

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(No:41372001,41430102);; 科学技术部基础性工作专项(2015FY310100-14);; 青海省基金项目(批准号:2016113003JC003);; 中国地质调查局项目(DD20160120-04/121201102000150010-04)

作者(Author): 李春晓,王世骐,郝呈禄,陈光庭,孙博阳,郑妍,许泗建

DOI: 10.19839/j.cnki.dcxzz.2018.03.007

参考文献(References)：

• 邓涛.2016.中国北方哺乳动物群在中中新世气候适宜期的记录和表现.第四纪研究,36:810-819.
• 李传夔,邱铸鼎.1980.青海西宁盆地早中新世哺乳动物化石.古脊椎动物与古人类,18(3):198-214.
• 刘梦儒.1992.西宁-民和盆地上第三系层序及所含化石.青海地质,(2):1-17.
• 邱铸鼎,李传夔,王士阶.1981.青海西宁盆地早中新世哺乳动物化石.古脊椎动物与古人类,18(3):198-214.
• 邱占祥,叶捷,霍福臣.1988.记宁夏同心发现的库班猪头骨化石.古脊椎动物学报,26:1-19.
• 青海省地质矿产局.1985.中华人民共和国区域地质调查报告(1/50000)《多巴幅》,《西宁市幅》,《田家寨幅》,《高店幅》.武汉:中国地质大学出版社.1-545.
• 青海省地质矿产局.1991.青海省区域地质志.北京:地质出版社.1-665.
• 青海省地质调查院.2007.中华人民共和国区域地质调查专题报告(1/250000),西宁市幅.西宁:青海省地质调查院.1-365.
• 威妥玛(英),1886.语言自迩集(第二版)(张卫东译).上海:上海海关总督察统计署.1-532.
• 武力超,岳乐平,王建其.2006.新近系谢家阶层型剖面古地磁年代学研究.地层学杂志,30(1):50-53.
• 西宁市志编纂委员会.1998.西宁市志·大事记.西安:陕西人民出版社.1-239.
• 肖国桥.2009.西宁地区晚始新世-早中新世沉积的磁性地层与沉积环境演化研究[博士论文].西安:中国科学院研究生院.1-108.
• 杨湘雯.2017.临夏盆地中中新统维曼嵌齿象((Gomphotherium wimani))(长鼻目,嵌齿象科)新材料研究[硕士论文],北京:中国科学院大学.1-57.
• 杨湘雯,李雨,王世骐.2017.临夏盆地中中新统维曼嵌齿象(Gomphotherium wimani)(长鼻目,嵌齿象科))的头骨及颊齿.古脊椎动物学报,55(4):331-346.
• 叶捷,吴文裕,倪喜军,毕顺东,孙继敏,孟津.2012.新疆准噶尔盆地北缘夺勒布勒津剖面的地层学及环境意义.中国科学(地球科学),42:1523-1532.
• Andersson J G.1925.Geological notes from Kansu.Bulletin of the Geological Society of China,4:15-18.
• Dai S,Fang X M,Dupont-Nivet G,Song C H,Gao J P,Krijgsman W,Langereis C&Zhang W L.2006.Magnetostratigraphy of Cenozoic sediments from the Xining Basin:Tectonic implications for the northeastern Tibetan Plateau.Journal of Geophysical Research,111(B11102):doi:10.1029/2005JB004187
• Deng T,Qiu Z X,Wang B Y,Wang X M&Hou S K.2013.Late Cenozoic biostratigraphy of the Linxia Basin,northwestern China//Wang X M,Flynn L J&Fortelius M eds.Neogene Terrestrial Mammalian Biostratigraphy and Chronology of Asia.New York:Columbia University Press.243-273.
• Fang X M,Garzione C,Vood R V,Li J J&Fan M J.2003.Flexural subsidence by 29 Ma on the NE edge of Tibet from the magnetostratigraphy of Linxia Basin.Earth and Planetary Science Letters,210:545-560.
• Fang X M,Wang J Y,Zhang W L,Zan J B,Song C H,Yan M D,Appel E,Zhang T,Wu F L,Yang Y B&Lu Y.2016.Tectonosedimentary evolution model of an intracontinental flexural(foreland)basin for paleoclimatic research.Global and Planetary Change,145:78-97.
• Gradstein F M,Ogg J G&Smith A G eds.2004.A Geologic Time Scale2004.Cambridge:Cambridge University Press.1-589.
• Hopwood A T.1935.Fossil Proboscidea from China.Palaeontologia Sinica,Series C,9:1-108.
• Mateer N J&Lucas S G.1985.Swedish vertebrate palaeontology in China:A history of the Lagrelius Collection.Bulletin of the Geological Institutions of the University of Uppsala,New series,11:1-24.
• Qiu Z X,Wang B Y&Qiu Z D.2001.Land mammal geochronology and magnetostratigraphy of mid-Tertiary deposits in the Lanzhou Basin,Gansu Province,China.Eclogae Geologicae Helvetiae,94:373-385.
• Simpson G G.1945.The principles of classification and a classification of mammals.Bulletin of the American Museum of Natural History,85:1-350.
• Sun C C.1936.On the stratigraphy of upper Huangho and Nanshan regions.Bulletin of the Geological Society of China,15(1):75-85.
• Tassy P.1985.La place des mastodontes Miocènes de l’ancien monde dans la phylogénie des Proboscidea(Mammalia):hypothèses et conjectures.Unpublished Thèse Doctoratès Sciences.Paris:UPMC(UniversitéPierre et Marie CURIE).
• Tobien H,Chen G F&Li Y Q.1986.Mastodonts(Proboscidea,Mammalia)from the Late Neogene and Early Pleistocene of the People's Republic of China,part I:historical account,the genera Gomphotherium,Choerolophodon,Synconolophus,Amebelodon,Platybelodon,Sinomastodon.Mainzer Geowissenschaftliche Mitteilungen,15:119-181.
• Tobien H,Chen G F&Li Y Q.1988.Mastodonts(Proboscidea,Mammalia)from the Late Neogene and Early Pleistocene of the People's Republic of China,part II:the genera Tetralophodon,Anancus,Stegotetrabelodon,Zygolophodon,Mammut,Stegolophodon.Mainzer Geowissenschaftliche Mitteilungen,17:95-220.
• Wang S Q.2014.Gomphotherium inopinatum,a basal Gomphotherium species from the Linxia Basin,China,and other Chinese members of the genus.Vertebrata Pal Asiatica,52:183-200.
• Wang S Q,Duangkrayom J&Yang X-W.2015.Occurrence of the Gomphotherium angustidens group in China,based on a revision of Gomphotherium connexum(Hopwood,1935)and Gomphotherium shensiensis Chang and Zhai,1978:continental correlation of Gomphotherium species across the Palearctic.Pal?ontologische Zeitschrift,89:1073-1086.
• Wang S Q,Li Y,Duangkrayom J,Yang X-W,He W&Chen S-Q.2017.Anew species of Gomphotherium(Proboscidea,Mammalia)from China and the evolution of Gomphotherium in Eurasia.Journal of Vertebrate Paleontology,37:1-15.
• Xiao G Q,Guo Z T,Guillaume D N,Lu H Y,Wu N Q Ge J Y,Hao Q Z,Peng S Z,Li F J,Abels H A&Zhang K X.2012.Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in the sedimentary archive of the Xining Basin,Northwestern China.Earth and Planetary Science Letters,317-318:185-195.
• Yang R S,Fang X M,Meng Q Q,Zan J B,Zhang W L,Deng T,Yang Y B,Ruan X B,Yang L Y&Li B S.in press.Paleomagnetic constraints on the Middle Miocene-Early Pliocene stratigraphy in the Xining Basin,NE Tibetan Plateau,and the geologic implications.Geochemistry,Geophysics,Geosystems.
• Young C C&Bian M N.1937.Cenozoic geology of the Kaolan-Yungteng Area of Central Kansu.Bulletin of the Geological Society of China,16:221-260.
• Yue L P,Heller F,Qiu Z X,Zhang L,Xie G P,Qiu Z D&Zhang Y X.2001.Magnetostratigraphy and paleoenvironmental record of Tertiary deposits of Lanzhou Basin.Chinese Science Bulletin,46:770-774.
• Zachos J,Pagani M,Sloan L,Thomas E&Billups K.2001.Trends,rhythms and aberrations inglobal climate 65 Ma to present.Science,292:686-693.
• Zan J B,Fang X M,Yan M D,Zhang W L&Lu Y.2015.Lithologic and rock magnetic evidence for the Mid-Miocene Climatic Optimum recorded in the sedimentary archive of the Xining Basin,NE Tibetan Plateau.Palaeogeography,Palaeoclimatology,Palaeoecology,431:6-14.
• Zhang W L,Zhang T,Song C H,Appel E,Mao Z Q,Fang Y H,Lu Y,Meng Q Q,Yang R S,Zhang D W,Li B S&Li J.2017.Termination of fluvial-alluvial sedimentation in the Xining Basin,NE Tibetan Plateau,and its subsequent geomorphic evolution.Geomorphology,297:86-99.