1. Department of Anatomy; Howard University College of Medicine; Washington DC 20059
2. Department of Organismal Biology; Evolutionary Biology Centre, Uppsala University, Norbyvägen 18A; Uppsala 752 36 Sweden
3. School of Biological Sciences, College of Science and Engineering; Flinders University; Adelaide South Australia 5042 Australia
4. Laboratory for the Study of Craniofacial Evolution & Development, Vinicna 7; Charles University in Prague; Prague 128 44 Czech Republic
5. Institut für Zoologie und Evolutionsforschung; Friedrich-Schiller-Universität Jena; Jena Germany