甘肃晚中新世伊哈池地点的仓鼠化石
Cricetids(Rodentia,Mammalia)from the Late Miocene Yihachi locality of Gansu,China
摘要
Abstract
Our purpose in this paper is to describe the hamster-like rodents(Cricetidae)from a Late Miocene age site in Linxia Basin,Gansu Province,and discuss their significance for the changing ecology of central Asia.The micromammal site known as Yihachi was introduced previously(Qiu et al.,2023;Qiu and Li,2023),when its squirrels were discussed in some detail.We take this opportunity to describe the more abundant cricetids.There are four genera,common Nannocricetus and Sinocricetus plus the less abundant living Mesocricetus.A few specimens represent the high-crowned and lophodont Rhinocerodon.The cricetids and other faunal elements indicate an early Late Miocene age,and the pattern of occurrence of the hamster species is consistent with a picture of a changing paleoenvironment due to increasing effects of the East Asia monsoon system.After the disappearance of older and archaic genera,Yihachi represents growing endemism in the Late Miocene of northern China due to increasing seasonal rain and the declining average temperature.关键词
甘肃临夏伊哈池/晚中新世/"柳树"组/仓鼠科/分类学Key words
Yihachi,Linxia,Gansu/Late Miocene/"Liushu"Formation/Cricetidae/taxonomy分类
生物科学引用本文复制引用
邱铸鼎,Lawrence J. FLYNN,王伴月,李录..甘肃晚中新世伊哈池地点的仓鼠化石[J].古脊椎动物学报（中英文）,2026,64(1):1-25,25.基金项目
国家自然科学基金(批准号:42372028)和中国科学院前沿科学重点研究计划(编号:QYZDY-SSW-DQC022)资助. The authors would like to express their gratitude to Prof.Deng Tao for his invitation to contribute the paper in this festschrift issue to celebrate the distinguished achievements of Prof.Qiu Zhanxiang.We also thank Prof.Qiu Zhanxiang for his guidance in this project and campaigns.Many thanks are given to Chen Shanqin and Li Junlong from the Hezheng Paleozoological Museum(Gansu Province)and Feng Wenqing,Suo Chao and Xu Sijian for their help in collecting and washing fossils in the field.For financial support,we thank the National Natural Science Foundation of China(42372028)and the Key Project of Frotier Science Research of the Chinese Academy of Schiences(No.QYZDY-SSW-DQC022). （批准号:42372028）
