1. Department of Geology, University of Otago, 360 Leith Walk, 9010, Dunedin, New Zealand
2. University of California Museum of Paleontology, University of California, 1101 Valley Life Sciences Building, 94720, Berkeley, CA, USA
3. Department of Geology and Environmental Geosciences, College of Charleston, 66 George Street, 29424, Charleston, SC, USA
4. Departments of Paleobiology and Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA