1. Department of Earth and Planetary Sciences University of California Riverside CA USA
2. Geobiology Group Geoscience Centre University of Göttingen Göttingen Germany
3. Trofimuk Institute of Petroleum Geology and Geophysics Siberian Branch Russian Academy of Sciences Novosibirsk Russia
4. Novosibirsk State University Novosibirsk Russia
5. Federal Institute for Geosciences and Natural Resources (BGR) Hannover Germany