| Citation: | Xiuchun Jing, Yang Shen, Ru Fan, Shengju Yin, Jingjing Fan, Jitao Chen. Refining Middle–Upper Ordovician Conodont Biostratigraphy in the Hatuke Creek Section, Western North China Craton: Evidence from Bedding Plane Assemblages and Implications for Shale Gas Exploration. Journal of Earth Science, 2025, 36(6): 2561-2578. doi: 10.1007/s12583-024-0109-x
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The 128.6-m-thick, shale-dominated Klimoli, Wulalike and Lashizhong formations exposed at the Hatuke Creek Section in the Zhuozishan area of Inner Monglia, North China, have been investigated for conodonts. Detailed stratigraphical collections of conodonts preserved on bedding planes from graptolitic shales, supplemented by additional discrete conodonts acid-leached from limestones, enable a refinement of the conodont biostratigraphic scheme at this section. Four successive conodont biozones, ranging in age from mid Darriwilian to late Sandbian (Stage slices Dw2–Sa2), are identified: the
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