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大型哺乳动物真猛犸象在晚更新世时曾广泛分布北半球辽阔的地区。据最近的研究表明，在我国它曾覆盖了从北纬55°到北纬35°的广大区域。已发现的众多猛犸象化石地点中，有不少已作过详细的同位素年代测定。从生物地层学和同位素年代学的角度，纵观真猛犸象从极地侵入我国境内及其繁盛衰亡的演变史，不难看出真猛犸象在我国北方晚更新世晚期曾有过两次比较集中的活动高潮，并每次都伴随有明显的向南迁徙。它的第一次南迁大致发生在距今3．4－2．6万年前（或可能略早），策二次南迁大致发生在距今2．3－1．2万年前。真猛犸象的这两次南迁活动与本次冰期两次较明显的冷暖交替的小气候波动在时间上大体吻合。
Mammals, large mammals, were widely distributed throughout the northern hemisphere during late Pleistocene. According to recent studies, it has covered a vast area from 55 ° north latitude to 35 ° north latitude in our country. Many of the many mammoth fossil sites that have been discovered have been identified by a number of detailed isotopic dating. From the perspective of biostratigraphy and isotopic chronology, it is easy to see that the true mammoth had been twice concentrated in the late Late Pleistocene in the northern part of our country, looking at the evolution history of the true mammoth from the polar intrusion into our country and its prosperity and decline. The climax of the event, accompanied by a clear southward migration every time. Its first move to the south occurred roughly 3-4 million years ago (or may be slightly earlier), the policy of two south move roughly occurred in 2.3-1.2 million years ago. The two maneuvering activities of the true mammoth coincide roughly with the microclimate alternations of cold and warm in the glacial period.