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Yang MS., 1977. In Hubei Sheng Dizhi Kexue Yanjiusuo [Hubei Province Institute of Geology], Zhongnan diqu gushengwu tuce.1. Zao gushengdai bufen. [Palaeontology of central and southern China.Vol.1.Lower Palaeozoic.] Dizhi Chuban She [Geological Press], Be. |