1. Stephenson Geoscience Consulting Ltd, Nottingham, UK
2. Institut für Geologie und Paläontologie, Münster University, Münster, Germany
3. Earth Sciences, Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA
4. Environmental and Applied Geology Department, The University of Jordan, Amman, Jordan
5. Technische Universität Bergakademie Freiberg, Freiberg, Germany