1. State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences and Resources China University of Geosciences Beijing China
2. Department of Earth and Environmental Sciences Ludwig Maximilian University Munich Germany
3. State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology Chinese Academy of Sciences Nanjing China
4. School of Ocean Sciences China University of Geosciences Beijing China