SUN Shufen, ZHU Shixing, HUANG Xueguang, CAO Fang, XIN Houtian Tianjin Institute of Geology, Mineral Resources, China Geological Survey, Tianjin,.2004. Discovery of Parachuaria from the Chuanlinggou Formation of the Changcheng System in the Yanshan Region and Its Significance[J]. Acta Geologica Sinica,78(6):721-725
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