1. Center for the Advanced Study of Human Paleobiology, Department of Anthropology, The George Washington University, Washington, DC, USA
2. Max Planck Institute for Evolutionary Anthropology, Deutscher Platz, Leipzig, Germany
3. Department of Psychology, Franklin and Marshall College, Lancaster, PA, USA
4. Faculty of Science, School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK
5. Centre for Research and Conservation, Royal Zoological Society of Antwerp, Koningin Astridplein, Antwerp, Belgium