1. Department of Earth & Environmental Science, Paleontology & Geobiology, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, 80333 Munich, Germany
2. Section of Earth & Environmental Sciences, University of Geneva, rue des Maraichers 13, 1205 Geneva, Switzerland
3. GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Section 5.3: Geomicrobiology, Telegrafenberg, 14473 Potsdam, Germany
4. Geobio-Center, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, 80333 Munich, Germany