古脊椎动物学报2013，Vol.51Issue(1)：55-70,16.
新疆准噶尔盆地北缘中中新世早期的原圆齿鼠(Promylagaulinae,Mylagaulidae)
Mylagaulids (Mammalia: Rodentia) from the early Middle Miocene of northern Junggar Basin
摘要
Abstract
Application of CT (computed tomography) scanning technology to the study of tooth morphology of mylagaulids makes better understanding the tooth structure of high-crowned mylagaulids. Two genera and species from the early Middle Miocene Halamagai Formation innorthern Junggar Basin of Xinjiang are recognized: Tschalimys ckhikvadzei Shevyreva, 1971,the senior synonym of Sinomylagaulus halamagaiensis Wu, 1988 and Simpligaulus yangi gen.et sp. nov. Both taxa undoubtedly belong to the subfamily Promylagaulinae. The integrated lithological, paleontological and paleomagnetic studies on sediments of the Late Oligocene through Late Miocene in the northern Junggar Basin of Xinjiang demonstrate that Halamagai Formation is fluvial-lacustrine sediments formed during the time coincident to the Mid-Miocene Climatic Optimum. T. ckhikvadzei and S. yangi probably inhabit the humid and warm regions with forests and densely vegetated thickets as the living mountain beaver Aplodontia rufa does. Thesemylagaulids are probably immigrants or the descendants of the immigrants from west North America.关键词
准噶尔盆地北缘/中中新世早期/原圆齿鼠亚科/气候/迁徙Key words
northern Junggar Basin/early Middle Miocene/Promylagaulinae/climate/immigrants分类
生物科学引用本文复制引用
吴文裕,倪喜军,叶捷,孟津,毕顺东..新疆准噶尔盆地北缘中中新世早期的原圆齿鼠(Promylagaulinae,Mylagaulidae)[J].古脊椎动物学报,2013,51(1):55-70,16.基金项目
国家重点基础研究发展计划项目(编号:2012CB821904)和国家自然科学基金(批准号:40672009,40872032)资助.This research has been supported by grants from the National Basic Research Program of China (2012CB821904) and the Chinese National Natural Science Foundation (40672009,40872032). （编号:2012CB821904）
