My research focuses on reconstructing paleoenvironmental conditions in deep time, particularly with regard to the end Cretaceous (or K-Pg) mass extinction. I am also working to better understand the paleoecology of extinct organisms, most specifically ammonites, as they are an important victim of the K-Pg extinction. Primarily I address these questions through analysis of carbon and oxygen isotopic values in carbonate, as well as sedimentary organic carbon material.