古脊椎动物学报（中英文）2026，Vol.64Issue(1)：100-124,25.DOI:10.19615/j.cnki.2096-9899.251029
内蒙古上中新统宝格达乌拉组沉积历史、接触关系、分布特征及臭鼬化石的描述
Depositional history,contact relationships,and characterization of Upper Miocene Baogeda Ula Formation in central Nei Mongol with a description of fossil skunks
摘要
Abstract
In addition to its well-known fossils,the Upper Miocene Baogeda Ula Formation is coupled with multiple basaltic lava flows,creating an ideal setting for studying its depositional history,geochronology,and associated vertebrate fossils.This paper,in honor of Prof.Qiu Zhanxiang for his widely admired emphasis on the geological contexts of vertebrate fossils,attempts to synthesize known contact relationships,existing K-Ar dates,and capping basalt elevations to reframe our concept of the lithostratigraphy,magnetostratigraphy,and lateral distribution of the Baogeda Ula Formation.Within this new framework,the Baogeda Ula Formation is defined by unconformable contact with the underlying Tunggur Formation at the lower boundary and a capping basalt at the upper boundary.In many sections,two or three layers of basalts are interbedded within sedimentary strata,with the capping basalts typically belonging to the top two basalts.The newly defined Baogeda Ula Formation includes a lower member as exemplified by Halajin Hushu section and Ulan Hushuyin Nur section,and an upper member at Baogeda Ula section.This expanded concept of the Baogeda Ula Formation includes two major faunas,i.e.,the Bahean Halajin Hushu Fauna and Baodean Baogeda Ula Fauna,both falling within the Upper Miocene.We also describe rare fossil skunks(Promephitis)found in recent years that support the age assessments presented herein.关键词
内蒙古/中新世/宝格达乌拉组/地层/臭鼬Key words
Nei Mongol/Miocene/Baogeda Ula Formation/stratigraphy/skunks分类
天文与地球科学引用本文复制引用
王晓鸣,孙蕗,李录,李强,邱铸鼎,曾志杰..内蒙古上中新统宝格达乌拉组沉积历史、接触关系、分布特征及臭鼬化石的描述[J].古脊椎动物学报（中英文）,2026,64(1):100-124,25.基金项目
国家自然科学基金(批准号:42372028,42374094,42430207)和国家重点研发计划(编号:2023YFF0804500)资助. Funding for this research includes National Natural Science Foundation of China(No.42372028 to Li Lu （批准号:42372028,42374094,42430207）
No.42374094 to Sun Lu （）
No.42430207 to Li Qiang)and National Key Research and Development Program of China(No.2023YFF0804500 to Li Qiang). （No.2023YFF0804500 to Li Qiang）
