1. Christian Bartel, Freie Universität Berlin, Institute of Geological Sciences, Paleontology Section, Malteserstraße 74-100, D-12249 Berlin, Germany; E-mail:
2. Shahan Derkarabetian, Department of Organismic and Evolutionary Biology, Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA; E-mail:
3. Jason A. Dunlop, Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstrasse 43, D-10115 Berlin, Germany; E-mail: