Gordon Neil Inglis, University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, BS8, United Kingdom, Dan John Lunt, University of Bristol, Bristol, BS8, United Kingdom, Christopher John Hollis, GNS Science, Lower Hutt, New Zealand, Jessica E Tierney, University of Arizona, Geosciences, Tucson, AZ, United States, Matt Huber, Purdue University, West Lafayette, IN, United States, Margot Cramwinckel, Utrecht University, Utrecht, Netherlands and The DeepMIP Contributors