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INTRODUCTION This paper embodies the descriptions of four species of Gastropods and three species of Pelecypods collected from Tungur, Mongolia, by Dr. C. C. Young and Père Teilhard de Chardin of the Geological Survey of China.
INTRODUCTION This paper embodies the descriptions of four species of Gastropods and three species of Pelecypods collected from Tungur, Mongolia, by Dr. C. C. Young and Père Teilhard de Chardin of the Geological Survey of China.