1. Department of Geosciences, University of Fribourg, Fribourg, Switzerland
2. Dipartimento di Scienze della Terra, Università di Torino, Torino, Italy
3. Faculty of Science, Department of Geological Sciences, Masaryk University, Brno, Czech Republic
4. Faculty of Geology and Geoenvironment, National & Kapodistrian University of Athens, Athens, Greece
5. Institut Català de Paleontologia Miquel Crusafont, Universitat Autònoma de Barcelona, Edifici ICTA-ICP, Barcelona, Spain