Fossil Equidae in the Linxia Basin with Biostratigraphic and Paleozoogeographic Significance  

作　　者：SUN Boyang 

机构地区：[1]Key Laboratory of Vertebrate Evolution and Human Origins of the Chinese Academy of Sciences,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044,China

出　　处：《Acta Geologica Sinica(English Edition)》2024年第1期1-9,共9页地质学报（英文版）

基　　金：supported by National Key Research and Development Program of China(Grant No.2023YFF0804501);the Youth Innovation Promotion Association,Chinese Academy of Sciences(Grant No.2021069);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDB31000000);the Second Comprehensive Scientific Expedition on the Tibetan Plateau(Grant No.2019QZKK0705);the All China Commission of Stratigraphy(Grant No.DD20221829).

摘　　要：The Linxia Basin is characterized by an abundance of Cenozoic sediments,that contain exceptionally rich fossil resources.Equids are abundant in the Linxia Basin,the fossil record of equids in this region including 16 species that represent 10 genera.In comparison to other classic late Cenozoic areas in China,the Linxia Basin stands out,because the fauna and chronological data accompanying Linxia equids render them remarkably useful for biostratigraphy.The anchitheriines in the region,such as Anchitherium and Sinohippus,represent early equids that appeared in the late stages of the middle and late Miocene,respectively.Among the equines,most species of Chinese hipparions have been identified in the Linxia Basin and some species of the genera Hipparion and Hippotherium have FAD records for China.Furthermore,Equus eisenmannae is one of the earliest known species of Equus in the Old World and is well-represented at the Longdan locality.Some species with precise geohistorical distributions can serve as standards for high-resolution chronological units within this framework.Located at the eastern margin of the Tibetan Plateau and subject to considerable uplift,the Linxia Basin has served as a biogeographic transition area for equids throughout the late Cenozoic.

关 键 词：EQUIDAE CENOZOIC BIOSTRATIGRAPHY paleozoogeography Linxia Basin 

分 类 号：Q915.2[天文地球—古生物学与地层学]