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Ⅰ. INTRODUCTION Since our knowledge on the later Cenozoic deposits in China has considerably increased, the problem concerning the inter-relation between the Choukoutien formation and other formations has naturally to be taken into consideration. According to the conclusion of Teilhard and Young (V. 8) the age of the Choukoutien formation is of Lower Quaternary (Polycene). Though 相似文献
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