L. A. Buatois, G. Mangano, C. G. Maples, and W. P. Lanier, “Allostratigraphic and Sedimentologic Applications of Trace Fossils to the Study of Incised Estuarine Valleys: An Example from the Virgilian Tonganoxie Sandstone Member of Eastern Kansas”, CRES, no. 241, pp. 1–27, Mar. 1998, doi: 10.17161/cres.v0i241.11782.