Emily Cunningham, University of Missouri, Columbia, Columbia, MO, United States, Stuart M. Kenderes, University of Missouri, Columbia, Besancon, France, Francisco G Gomez, University of Missouri, Department of Geological Sciences, Columbia, MO, United States, Kenneth S Befus, Baylor University, Department of Geosciences, Waco, TX, United States and Alan G Whittington, University of Missouri, Geological Sciences, Columbia, MO, United States