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1by Feng HongZhen, Li Ming, Zhang YuanDong, Erdtmann, Bernd-D., Li Lixia, Wang WenHuiSubjects: “...Upper Tremadoc graptolites...”
Published in Science in China Series D: Earth Sciences (2009)
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2by Fan JunXuan, Melchin, Michael J., Chen Xu, Wang Yi, Zhang YuanDong, Chen Qing, Chi ZhaoLi, Chen FengSubjects: “...graptolitic black shales...”
Published in Science China Earth Sciences (2011)
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