Jason is an internationally recognized authority on palaeobotany and evolutionary plant biology. His interests focus on plant evolution in deep time, terrestrial palaeoenvironments and palaeoecology. His underlying goals are to increase the quantity of paleobotanical data included into evolutionary analyses and to provide a more detailed understanding of the past environments and climates in which fossil plants lived. His current research addresses the origin and phylogeny of major plant lineages and the causes of mass extinctions in the plant kingdom as well as patterns and processes related to their subsequent recovery.
Guy is a palynologist with world-leading expertise in Cenozoic fossil pollen and spores. With extensive experience in both academic and industrial micropalaeontology, Guy has held positions at the Smithsonian Museum of Natural History in Washington, DC and, most recently as a Senior Lecturer at the University of Birmingham. He is currently a Senior Stratigrapher at Petrostrat, as well as an Associate Lecturer contributing to the MSc in Micropalaeontology.