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Zhou & Yin MS.. In Hubei Sheng Dizhi Kexue Yanjiusuo et al. 1977 [Hubei Province Institute of Geology et al.], Zhongnan diqu gushengwu tuce.1. Zao gushengdai bufen. [Palaeontology of central and southern China. Vol.1. Lower Palaeo .] Dizhi Chuban She [Geo. |