摘要
记述了在内蒙古巴彦乌兰地区发现的４种始新世哺乳动物化石，其中包括１个啮齿类新种──Ｍｅｒｇｅｎｏｍｙｓ ｎｅｉｍｏｎｇｏｌｅｎｓｉｓ ｓｐ．ｎｏｖ。新种与在蒙古共和国发现的属型种Ｍ．ｏｒｉｅｎｔａｌｉｓ的不同在于个体大，下臼齿下外脊和下次小尖相对偏于唇侧。新化石的发现以及对岩石地层的分析表明巴彦乌兰剖面上原认为的伊尔丁曼哈组应包含伊尔丁曼哈及沙拉木伦组两个地层单位。
Four Eocene mammals were reposed from the Bayan Ulan locality, Nei Mongol, China, including a new rodent species-Mergenomys neimongolensis. The new species differs from the type species of the genus, Morientalis, in being larger and having the ectolophid and hypoconulid more labially posihoned. Based on the fossils and stratigraphic correlations, the beds that were previously considered to be 'lrdin Manha Formation' in the Bayan Ulan section are actually two rock units: the Irdin Manha formation below and the Shara Murun formation above. The new materials come from the late Middle Eocene Shara Murun formation.
出处
《古脊椎动物学报》
CSCD
北大核心
1999年第3期165-174,共10页
Vertebrata Palasiatica
基金
中国科学院重点项目!KZ952-J1-410
关键词
内蒙古
巴彦乌兰
始新世
哺乳类
地层
Bayan Ulan,Nei Mongol, Irdin Manha Fm., Sharamurun Fm., Ulangochu Fm., Rodentia, Lagomorpha
