1. Senckenberg Research Institute, Natural History Museum Frankfurt (SGN) and Senckenberg Biodiversität und Klima Forschungszentrum (SBIK-F), Frankfurt am Main, Germany
2. Department of Zoology, National Museum (Natural History), Praha 1, Czech Republic
3. Department of Zoology, Faculty of Science, Charles University, Praha 2, Czech Republic
4. Department of Paleontology, Ghent University, Ghent, Belgium
5. Socotra Karst Project, Destelbergen, Belgium
6. Department of Earth Sciences, Laboratory of Ion Beam Physics ETH Zurich, Zurich, Switzerland