Note: This is the latest version of the Permian timescale. We welcome any comments to improve it. All the information will be updated from time to time here. Data cited from Shen et al., 2019. Permian integrative stratigraphy and timescale of China. Science China Earth Sciences 62(1): 154-188. Guadalupian ages modified after Shen et al., 2020. Progress, problems and prospects: An overview of the Guadalupian Series of South China and North America. Earth-Science Reviews, 211: 103412.