Mangano, Gabriela M., Luis A. Buatois, Ronald R. West, and Christopher G. Maples. 2002. “Ichnology of a Pennsylvanian Equatorial Tidal Flat -- The Stull Shale Member at Waverly, Eastern Kansas”. Bulletin (Kansas Geological Survey), no. 245 (January): 1-139. https://journals.ku.edu/kgsbulletin/article/view/22279.