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根据现有文献资料,按甘肃西部(河西地区)、中部(陇中地区)、东部(陇东地区),由老至新,阐述了甘肃古近纪哺乳动物群,包括各哺乳动物群化石的产地、层位、性质、时代和研究者等。
According to the existing literatures, from ancient to new in Gansu western region (Hexi region), central region (Longzhong region) and eastern region (Longdong region), the paper elaborates the paleontological mammalian assemblages in Gansu Province, including fossils of various mammalian groups Origin, horizon, nature, age and researchers.