Sawin RS, Franseen EK, Watney WL, West RR, Ludvigson GA. New Stratigraphic Rank for the Carboniferous, Mississippian, and Pennsylvanian in Kansas. CRES [Internet]. 2009 Oct. 22 [cited 2024 May 6];(256):1-4. Available from: https://journals.ku.edu/cres/article/view/11846