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Graptolites from OrdovicianWufeng Formation and Silurian Zhoujiaxi Group in Yiyang, Hunan
HUANG Mo, LI Ming, YANG Zhenjing, DENG Liting
Geoscience . 2021, (05): 1343 -1353 .  DOI: 10.19657/j.geoscience.1000-8527.2021.075