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Time-calibrated phylogeny of Chinese amphibians for estimating phylogenetic diversity and phylogenetic endemism. The yellow filled circles indicate the potential cryptic species identified in this study. The phylogeny included 521 described Chinese amphibian species (93.5% of currently described species; Dataset S1) and 100 potential cryptic species. The tree is available in newick format in Dataset S5. Photos courtesy of Chenqi Lu, Peng Guo, Hui Zhao, Yufan Wang, and Bao-Lin Zhang.
