Author Affiliations +
Imran A. Rahman,1 Selena Y. Smith2
1School of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol BS8 1RJ, UK, < >; and imran.rahman@bristol.ac.uk
2Department of Earth and Environmental Sciences and Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109, USA < > sysmith@umich.edu