Original Cretaceous stratigraphy discussed in
Bayne, C.K.; and O'Connor, H.G., 1968,
Tertiary System, in, Zeller, D.E., (ed.); The stratigraphic succession in Kansas:
Kansas Geological Survey, Bulletin, no. 189, pp. 58-59 and
Bayne, C.K.; and O'Connor, H.G., 1968,
Quaternary System, in, Zeller, D.E., (ed.); The stratigraphic succession in Kansas:
Kansas Geological Survey, Bulletin, no. 189, pp. 59-67
http://www.kgs.ku.edu/Publications/Bulletins/189/10_ceno.html