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HARVARD Citation
Chen, X. et al. (2019). A restudy of the Sandbian to Katian (Upper Ordovician) graptolites from the East Qilianshan (Chilianshan), Northwest China. Journal of paleontology. pp. 1175-1209. [Online].
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Chen, X. et al. (2019). A restudy of the Sandbian to Katian (Upper Ordovician) graptolites from the East Qilianshan (Chilianshan), Northwest China. Journal of paleontology. pp. 1175-1209. [Online].