Paleo-Geographic Map of the Permian Basin (after J.F. Sarg, J.R. Markello, and L.J. Weber, 1999, The second-order cycle, carbonate-platform growth, and reservoir, source, and trap prediction, p. 11-34, in Advances in carbonate sequence stratigraphy; application to reservoirs, outcrops and models, P.M. Harris et al., eds: SEPM Special Publication 63).