Landing, E., Benus, A., 1985. The Levis Formation: Passive Margin Slope Processes and Dynamic Stratigraphy in the Western Area, in: Riva, J. (Ed.), Field Trips Guidebook. Canadian Paleontology and Biostratigraphy Seminar, Ste. Foy, QuebecUniversite Laval Press, Quebec. pp. 1-11.