1. Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University , Kiel, Germany
2. Systematic Entomology, Graduate School of Agriculture, Hokkaido University , Sapporo 060-8589, Japan
3. General and Systematic Zoology, Zoological Institute and Museum, University of Greifswald , Greifswald, Germany
4. Department of Cariology, Endodontology and Periodontology, Universität Leipzig , Leipzig 04103, Germany
5. Department of Mammalogy and Paleoanthropology, Leibniz Institute for the Analysis of Biodiversity Change , Hamburg 20146, Germany
6. Department of Electron Microscopy, Institute of Cell and Systems Biology of Animals, Universität Hamburg , Hamburg 20146, Germany