1. School of Biological Sciences and Swire Institute of Marine Science; the University of Hong Kong; Kadoorie Biological Sciences Building Pokfulam Road Hong Kong SAR China
2. Department of Paleobiology; National Museum of Natural History; Smithsonian Institution; Washington DC 20013-7012 USA
3. Department of Geology and Paleontology; National Museum of Nature and Science; 4-1-1 Amakubo Tsukuba Ibaraki 305-0005 Japan
4. Department of Geoscience; Interdisciplinary Graduate School of Science and Engineering; Shimane University; 1060 Nishikawatsu-cho Matsue 690-8504 Japan
5. Marine Geological Survey; Mines and Geosciences Bureau; North Avenue; Diliman Quezon City Philippines
6. National Institute of Geological Sciences; University of Philippines; Diliman Quezon City Philippines
7. Naturalis Biodiversity Center; PO Box 9517 2300 RA Leiden The Netherlands