Jason is a vertebrate paleontologist who was an US National Science Foundation Postdoctoral Fellow in Biological Informatics in the Polly Lab in 2002-2005 at Queen Mary, University of London. Jason remains a frequent collaborator. His work on the evolution of regionalization in vertebrates and Titanoboa and paleothermometry grew out of research he started as part of his postdoctoral fellowship. He received a BSc in biology from the University of Michigan in 1995, and a PhD in geology (with a concentration in vertebrate paleontology) from Southern Methodist University in 2002. His NSF postdoc was split with the Smithsonian Institution. He has held faculty positions at the George Washington University, University of Toronto, and University of Nebraska-Lincoln. He moved to Cambridge in 2015 where he is now University Lecturer in the Department of Zoology, Curator of Vertebrate Paleontology at the University Museum of Zoology, and Fellow Christ's College.