1. Paleoanthropology, Institute for Archaeological Sciences, Senckenberg Center for Human Evolution and Paleoenvironment, University of Tübingen, Tübingen, Germany
2. Department of Anthropology, University of Zurich, Zurich, Switzerland
3. Comparative Socioecology Research Group, Max Planck Institute of Animal Behavior, Konstanz, Germany
4. Center for the Interdisciplinary Study of Language Evolution (ISLE), University of Zurich, Zurich, Switzerland
5. Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
6. Division of Evolutionary Biology, Faculty of Biology, Ludwig Maximilian University of Munich, Planegg-Martinsried, Germany