Candidate For GSSP
An outcrop of the Kaili Formation, the Wuliu-Zengjiayan section, is a candidate for the GSSP for the beginning of the 5th stage of the Cambrian. The FAD of two trilobites from the formation are proposed to be the official stage boundary, Oryctocephalus indicus and Ovatoryctocara granulata. Both can be correlated with formations of similar age in Siberia and China.
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