欧亚大陆东部新近纪对于全面认识现代全球气候与生物群的形成过程起到重要的作用。最近的研究表明,该地区在整个新生代不仅是动植物发源地,而且也是周围大陆之间的生物地理通道。有科学家提出在上新世/更新世期间该地区也可能是人类演化的中心。新近纪青藏高原的隆升深刻地影响了全球气温与降雨的分布格局,导致了亚洲季风的形成与加剧以及中亚干旱化。这些气候的变化推动了草原植被及相关生物群在欧亚大陆的扩展,以及晚中新世C_4植物的生态扩张。最近几十年来,越来越多的科学家致力于对上述问题的研究。古生物学家们研究或修订了自20世纪早期以来发现的大量动植物化石 Neocene in Eastern Eurasia plays an important role in the comprehensive understanding of the formation process of modern global climate and biota. Recent studies show that the area throughout the Cenozoic is not only the birthplace of animals and plants, but also the biogeographical passage between the surrounding continents. Some scientists have suggested that the area may also be the center of human evolution during the Pliocene / Pleistocene. The uplift of the Neo-Neo-Qinghai-Tibet Plateau has profoundly affected the distribution of global temperature and rainfall, leading to the formation and aggravation of the Asian monsoon and the aridification of Central Asia. These climate changes have promoted the expansion of prairie vegetation and related biota in Eurasia and the ecological expansion of late Miocene C_4 plants. In recent decades, more and more scientists are devoted to the research on the above issues. Paleontologists have studied or revised a large number of fossil plants and animals found since the early 20th century