McKee, E.D., and Gutschick, R.C., 1969, Summary of geologic history--chronology of events, in McKee, E.D., and Gutschick, R.C., History of the Redwall Limestone of northern Arizona, [with] chapters on paleontology of the Redwall Limestone by B. Skipp, W.J. Sando, H. Duncan, E.L. Yochelson, W.M. Furnish, D.B. Macurda, Jr., and J.C. Brower: Geological Society of America Memoir 114, p. 587-590.
