About the Authors

Curtis R. Congreve

oldjack327@yahoo.com

Affiliation Department of Geology and Biodiversity Institute, University of Kansas, Lawrence, Kansas, United States of America

Bruce S. Lieberman

Affiliation Department of Geology and Biodiversity Institute, University of Kansas, Lawrence, Kansas, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CRC BSL. Performed the experiments: CRC. Analyzed the data: CRC. Contributed reagents/materials/analysis tools: CRC BSL. Wrote the paper: CRC BSL.