Jon D Richey, University of California Davis, Davis, CA, United States, Joseph D White, Baylor Univ, Waco, TX, United States, Isabel P Montanez, Univ of California, Davis, Earth and Planetary Sciences, Davis, CA, United States, Sophia Macarewich, University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, William J Matthaeus, Baylor University, Waco, TX, United States, Jonathan P Wilson, Haverford College, Haverford, PA, United States and William DiMichele, Smithsonian National Museum of Natural History, Paleobiology, Washington DC, MD, United States