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简要记述产自山东淄博孙家山裂隙群的主要哺乳动物化石，将之分为A、B、C三个动物群。A动物群时代与周口店第18地点相当，为早更新世早期；B动物群时代与周口店第9地点相当，为早更新世晚期；C动物群则可能与周口店第1地点中上部层位的时代相当，为中更新世中晚期。分析不同种类的生态类型并依据最小个体数的统计结果，认为早更新世早期本区为相对温湿的草原环境，附近可能有荒漠化现象；早更新世晚期气候较为温湿，无荒漠化现象；中晚更新世主要为林缘—灌丛环境，气候更为湿润。A动物群是华北地区早更新世早期特有的动物群，略具南北过渡区的特征；B动物群初具现代动物区系的面貌；C动物群基本与现代动物区系一致。
The main mammalian fossils from the Sunjia fracture group in Zibo, Shandong Province are briefly described and divided into three groups A, B and C. A fauna era and Zhoukoudian the same location as the site for the early Pleistocene; B fauna age and Zhoukoudian No. 9 site for early Pleistocene; C fauna may be the first site of Zhoukoudian the upper middle-level era Quite equivalent for the middle and late Pleistocene. According to the statistical results of different types of ecological types and based on the minimum number of individuals, it is considered that the area was relatively warm and humid grassland environment in the early Early Pleistocene and there may be desertification nearby. In the late Early Pleistocene, the climate was warm and humid with no desertification. The late Pleistocene mainly for the edge of forest - scrub environment, the climate is more humid. Animal fauna is characteristic of early Early Pleistocene Early Early Pleistocene fauna in North China, with a slight north-south transitional zone; Group B fauna has the appearance of modern fauna; and C fauna is consistent with modern fauna.