1. College of Life Sciences, Capital Normal University, Beijing 100048, China.
2. Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, USA.
3. Department of Entomology, University of Maryland, College Park, MD 20742, USA.
4. Department of Biology, Gallaudet University, Washington, DC 20003, USA.
5. Paleontological Institute, Russian Academy of Sciences, Moscow 117997, Russia.
6. Department of Palaeontology, Natural History Museum, London SW7 5BD, UK.
7. Department of Mineral Sciences, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013, USA.
8. National Center for Biotechnology Information, National Library of Medicine, Bethesda, MD 20892, USA.
9. Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA.