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Yu, 1974. In Zhongguo Kexue Yuan, Nanking Dizhi Gushengwu Yanjiusuo [Acad. Sinica, Nanking Inst. Geol. Paleont. (Ed.)], Xinan diqu di gushengwu tuce.[A handbook of the stratigraphy and palaeontology in southwest China.] Science Press, Peking 7. |