About the Authors

Thomas W. Kammer

tkammer@wvu.edu

Affiliation Department of Geology and Geography, West Virginia University, Morgantown, West Virginia, United States of America

Colin D. Sumrall

Affiliation Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee, United States of America

Samuel Zamora

Affiliation Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, United States of America

William I. Ausich

Affiliation School of Earth Sciences, The Ohio State University, Columbus, Ohio, United States of America

Bradley Deline

Affiliation Department of Geosciences, University of West Georgia, Carrollton, Georgia, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TWK CDS WIA. Performed the experiments: TWK CDS SZ WIA BD. Analyzed the data: TWK CDS SZ WIA BD. Wrote the paper: TWK CDS SZ WIA BD.