I am interested in understanding Earth-life co-evolution in the Proterozoic Eon and the Cambrian Period. Specifically, I study carbonaceous fossils to understand the biodiversity, biostratigraphy, and evolutionary pattern of early eukaryotes in the Proterozoic. I also work on Cambrian animal and algal fossils, in order to understand their taphonomy and evolutionary significance, and to better understand the Cambrian explosion. In addition, I work closely with my collaborators on paleoenvironmental reconstruction and geochronology of Proterozoic and Cambrian fossiliferous successions, using stable isotopes, iron speciation data, and zircon age data. My research goal is to develop a comprehensive understanding of the Earth-life system in the Proterozoic and Cambrian.