报道了内蒙古中部地区几个中新世小哺乳动物化石地点──嘎顺音阿得格、阿木乌苏、查干诺尔、沙拉等的新发现。探索了这些动物群体之间以及它们与经典的中中新世通古尔动物群和最晚中新世二登图动物群之间的关系。初步研究表明，嘎顺音阿得格动物群的时代更可能为早中新世，过去认为有属于晚渐新世的可能性不大。动物群的组成分析说明，中新世时内蒙古中部的生态环境具有浓厚的现代古北区的色彩。 A number of new discoveries of small mammalian fossil sites in the central Inner Mongolia, Gaoshunyin Adg, Amu Wusu, Chagannor, Salad and others were reported. Explored the relationship between these animal groups and their relationship with the classic Middle Miocene Tungur fauna and the latest Neocentre II Dinu fauna. Preliminary studies have shown that the age of the Gaoshinyin Adg fauna is more likely to be Early Miocene, which in the past was less likely to belong to Late Oligocene. The fauna composition analysis shows that the environment in central Inner Mongolia during the Miocene had a strong modern Gubei color.