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Sun, X. F. (1979). 陕西镇安及甘肃迭部晚二叠世的蜒类 - Upper Permian fusulinids from Zhen'an of Shaanxi and Tewo of Gansu, NW China. 古生物学报 - Acta Palaeontologica Sinica. 18(2): 163-170.
Sun, X. F. (1979). 陕西镇安及甘肃迭部晚二叠世的蜒类 - Upper Permian fusulinids from Zhen'an of Shaanxi and Tewo of Gansu, NW China. 古生物学报 - Acta Palaeontologica Sinica. 18(2): 163-170.