1. Department of Geological Sciences Stanford University Stanford CA USA
2. Department of Geosciences Colorado State University Fort Collins CO USA
3. Institute at Brown for Environment and Society and the Department of Earth, Environmental and Planetary Science Brown University Providence RI USA
4. Department of Earth and Planetary Science University of California Berkeley CA USA
5. Department of Geosciences University of Massachusetts Amherst MA USA
6. Department of Biology & Burke Museum of Natural History and Culture University of Washington Seattle WA USA