1. Abteilung Geowissenschaften, Staatliches Museum für Naturkunde Karlsruhe, Karlsruhe, Germany
2. The Harold Hamm School of Geology & Geological Engineering, University of North Dakota, Grand Forks, ND, USA
3. Biodiversity Institute, University of Kansas, Lawrence, KS, USA
4. Department of Geological Sciences, University of Missouri, Columbia, MO, USA
5. X-ray Microanalysis Laboratory, University of Missouri, Columbia, MO, USA
6. Environmental Solutions department, Jacobs Solutions, St. Louis, MO, USA