About the Authors

Kelsey T. Stilson

stilson@utexas.edu

Affiliation Jackson School of Geosciences, University of Texas, Austin, TX, 78712–1692, United States of America

Samantha S. B. Hopkins

Affiliations Department of Geological Sciences, University of Oregon, Eugene, OR, 97403–1272, United States of America, Clark Honors College, University of Oregon, Eugene, OR, 97403–1293, United States of America

Edward Byrd Davis

Affiliations Department of Geological Sciences, University of Oregon, Eugene, OR, 97403–1272, United States of America, Museum of Natural and Cultural History, University of Oregon, Eugene, OR, 97403–1224, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KTS SSBH EBD. Performed the experiments: KTS. Analyzed the data: KTS. Contributed reagents/materials/analysis tools: KTS SSBH EBD. Wrote the paper: KTS SSBH EBD.