We thank Paula Jenkins and Daphne Hills for providing access to samples. RB was supported by NERC and BS was supported by The Wellcome Trust. NY was supported by the European Union SYNTHESYS programme to visit Muséum National d’Histoire Naturelle, Paris, France, and Museum für Naturkunde der Humboldt-Universität, Berlin, Germany for skull measurements. We also thank Paula Jenkins, Daphne Hills, Louise Tomsett at Natural History Museum, London, Malgosia Nowak-Kemp at Natural History Museum, University of Oxford, Oxford, UK, Robert Asher, Peter Giere, Irene Thomas, Wolf-Die-ter Heinrich at Museum für Naturkunde der Humboldt-Univer-sität, Berlin, Katrin Krohmann, Thomas Martin at Forschungs-institut und Naturmuseum Senckenberg, Frankfurt, Germany, Jacques Cuisin, Francis Renoud, Daniel Robineau, Michel Tranier at Muséum National d’Histoire Naturelle, Paris, Marie-Dominique Wandhammer, Virginia Rakotondrahaja at Musée Zoologique, Strasbourg, France, for their kind support during NY’s visit to measure lion skulls. Two anonymous reviewers have contributed considerably with valuable comments, for which we are most thankful.
Received: 12 July 2007
Accepted: 6 December 2007