Wright JD and Schaller MF
(2013) Proceedings of the National Academy of Sciences USA 110, 15908.Wright JT
(2017) (submitted), arXiv:1704.07263.Zachos JC, et al.
(2001) Eos Transactions AGU Fall Meeting Supplement 82, 767.Zalasiewicz J
(2009) Earth Without Us. Oxford, UK: Oxford University Press.Zalasiewicz J, Kryza R and Williams M
(2013) Geological Society, London, Special Publications 395, 109.Zalasiewicz JN, et al.
(2017) Newsletters on Stratigraphy 50, 205–226.