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LocNo: 6679Tsingyuan Fm., up. Mb., bed 12,lower pt.
Country: China
Province: Ningxia, Zhongwei Co.
Locality: Xiaoyuchuan section, upper
Layer: Tsingyuan Fm., up. Mb., bed 12,lower pt.
Lower Boundary: Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
Upper Boundary: Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
Georeference: