1. Biogeomagnetism Group, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2. Geomicrobiology, Center for Applied Geosciences, University of Tuebingen, Tuebingen 72074, Germany
3. France-China International Laboratory of Evolution and Development of Magnetotactic Multicellular Organisms, Chinese Academy of Sciences, Beijing 100029, China
4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China