1. Department of Earth & Environmental Sciences Vanderbilt University Nashville TN USA
2. Evolutionary Studies Institute, Vanderbilt University Nashville TN USA
3. Department of Geological Sciences University of Missouri Columbia MO USA
4. National Park Service Grand Canyon National Park Flagstaff AZ USA
5. Department of Geology, Unit for Environmental Sciences & Management North‐West University Potchefstroom South Africa
6. Department of Chemical & Physical Sciences University of Toronto Mississauga Mississauga ON Canada
7. Senckenberg Museum of Natural History Frankfurt 60325 Germany