Bond, D. P. G., Wignall, P. B., Wang, W., Izon, G., Jiang, H. S., Lai, X. L., …Cope, H. (2010). The mid-Capitanian (Middle Permian) mass extinction and carbon isotope record of South China. Palaeogeography, palaeoclimatology, palaeoecology, 292(1-2), 282-294. https://doi.org/10.1016/j.palaeo.2010.03.056