Abstract: During the field work of 1998 in the north Junggar Basin of Xinjiang Uygur Autonomous Region, rich fossils were found from the Ulunguhe Formation which was originally dated as Cretaceous in age. Probe sample of ca. 400kg for screenwashing was taken from locality XJ98024 north of Tieersihabahe. From about 1.0kg of residue 170 teeth of micromammals were sorted out, altogether 31 species belonging to 21 genera, 17 families and 7 orders have been recognized in this fauna, many of which are elements of the late Oligocene fauna of Taben buluk. Four teeth of them belong to dormice, which were identified as Glirulus sp. and Gliridae gen. et sp. indet. Therefore the dormice from Tieersihabahe are the earliest dormice found in China, the first recovery of Oligocene dormice from China and the Glirulus sp. is the earliest record of this genus.

摘要： 在新疆准噶尔盆地北缘富蕴县境内乌伦古河北岸铁尔斯哈巴合北的原乌伦古河组中发现了中国境内迄今为止最早的睡鼠化石Glirulus sp.和Gliridae gen. et sp. indet.。前者以三枚臼齿M2、 M3和m1为代表，后者仅拥有一枚P4。依共生动物群的组成和性质其时代应为晚渐新世。