1. Department of Earth and Planetary Sciences, Yale University, New Haven, CT, USA.
2. School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, USA.
3. Department of Earth and Planetary Sciences, University of California Davis, Davis, CA, USA.
4. Peabody Museum of Natural History, Yale University, New Haven, CT, USA.
5. Department of Earth and Environmental Sciences, Wesleyan University, Middletown, CT, USA.