1. Department of Earth Sciences; University of California - Riverside; Riverside California USA
2. Formerly at Max Planck Institute for Marine Microbiology; Bremen Germany
3. Now at Boone Pickens School of Geology; Oklahoma State University; Stillwater Oklahoma USA
4. Geological Institute, ETH Zurich; Zurich Switzerland
5. Now at Institute of Geology, University of Innsbruck; Innsbruck Austria
6. College of Oceanic and Atmospheric Sciences; Oregon State University; Corvallis Oregon USA
7. Max Planck Institute for Marine Microbiology; Bremen Germany
8. Department of Geological Sciences; University of Florida; Gainesville Florida USA