Younger... || Start || Older...
Original Version || Changes Highlighted || Final Version
Original Version || Changes Highlighted || Final Version
Younger... || Start || Older...
Original Pennsylvanian stratigraphy discussed in Jewett, J.M.; O'Connor, H.G.; and Zeller, D.E., 1968, Pennsylvanian System, in, Zeller, D.E., (ed.); The stratigraphic succession in Kansas: Kansas Geological Survey, Bulletin, no. 189, pp. 21-43 http://www.kgs.ku.edu/Publications/Bulletins/189/07_penn.html