Abstract: Triplopus sp., Triplopus? jeminaiensis sp. nov.、Lophialetes sp. and Hyaenodontidae gen. et sp. collected from the Early Tertiary of Jeminay（850H11一1 2, 47。 29' N 85。88' E), Xinjiang by Geology Bureau of Xinjiang Uygur Autonomous Region in1985 are described in this paper. These newly found fossils demonstrate the existence Of Middle Eocene deposits in Jeminay area. And the mammal assemblage can be compared with Irdin Manha fauna of Nei Mongol and approximately equivalent to Obayla svita or Sargamys svita of western Zaysan basin. Its age is considered as Irdin Manha period.

摘要： 记述了新疆吉木乃地区托斯特西部发现的Triplopus sp., Triplopus? jeminaiensis sp. nov.、Lophialetes sp.及Hyaenodontidae indet.等哺乳动物化石，证实了这一地区中始新世地层的存在。其属种构成大致可与内蒙古伊尔丁曼哈动物群及哈萨克斯坦中始新世Obayla或Sargamys哺乳动物群对比，时代为伊尔丁曼哈期。