Author: An, Tai-xiang, 1982.:
Title: Study on the Cambrian conodonts from North and Northeast China.
Description: Sci. Rep. Inst. Geosci. Univ. Tsukuba, Sec. B, 3: pp. 1130159,[33], numerous photos on 17 pls., 10 maps and diagrs. (2 fold.), refs. Plain new wrs.

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