1. Department of Earth Sciences; Indiana University-Purdue University Indianapolis; Indianapolis IN USA
2. U.S. Geological Survey; Menlo Park CA USA (retired)
3. School of Earth Sciences and Environmental Sustainability; Northern Arizona University; Flagstaff AZ USA
4. Department of Geology; University of Kansas; Lawrence KS USA
5. National Museum of Nature and Science; Tokyo Japan
6. Department of Geology; University of Maryland; College Park MD USA
7. Department of Earth and Space Sciences; West Chester University; West Chester PA USA
8. Department of Geological and Atmospheric Sciences; Iowa State University; Ames IA USA