References
References: X
References listed alphabetically
Xiao, Yingwen (1991) First discovery of Sinopliosaurus in the Late Triassic in Central Yunnan; Regional Geology of China, (Series 37, No.2), pp.180-182
Xie, Shucheng et. al. (2005) Two episodes of microbial change coupled with Permo/Triassic faunal mass extinction; Nature (Letters to Nature), 434(24 MARCH 2005), pp.494-497