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本文研究了中国黄土地层中有确切层位的哺乳动物化石记录，并进行了生物地层学与磁性地层学对比，将黄土地层中的动物化石归纳成如下哺乳动物群：早更新世（2．50─0．73Ma）：午城动物群（2．50─1．20Ma）、公王岭动物群（1．20─1．10Ma）和阳郭动物群（1．10─0．90Ma）、中更新世（0．73─0．13Ma）：陈家窝子动物群（0．73─0．40Ma）；晚更新世（0．13─0．01Ma）：柔远─靖远动物群（0．13─0．01Ma）；全新世（0．01Ma─Rec）:半坡动物群。结果表明：早更新世许多森林习性的化石动物虽然反映出气候较第三纪的寒冷，但比后期温暖湿润。中更新世出现了较多的草原、干旱草原习性的动物，气候更为寒冷干旱，森林逐渐减少或消失，草原或干旱草原得到发展；晚更新世出现的沙鼠、跳鼠等动物，表明气候更加寒冷、干旱，部分地区甚至沙化。
In this paper, the records of mammalian fossils with the exact horizon in the loess stratum of China are studied and the biostratigraphy and magnetic stratigraphy are compared. The animal fossils in the loess stratum are summarized as mammalian fauna: Early Pleistocene (2.50 ─0.73Ma): afternoon city animal group (2.50 ─ 1.20Ma), Gongwangling fauna (1.20 ─ 1.10Ma) and Yang Guo animals (1.10 ─ 0.90Ma), in Pleistocene (0.73─0.13Ma): Chenjiawozi fauna (0.73─0.40Ma); Late Pleistocene (0.13─0.01Ma): Yuanyuan-Jingyuan fauna (0 .13 ─0.01Ma); Holocene (0.01Ma-Re): Banpo fauna. The results show that many early Pleistocene fossils of forest habitat, although reflecting the climate than the Tertiary cold, but warm and humid than the latter. In the middle Pleistocene, more grasslands and arid prairie animals appeared. In the mid-Pleistocene, the animals were more cold and arid, the forests were gradually reduced or disappeared, and the steppes or arid steppe developed. Late Pleistocene animals such as gerbils and jerkens showed that climate It is even colder, drier and even desertified in some areas.