About the Authors

Jordi Martinell

Affiliation Institut de Recerca de la Biodiversitat and Facultat de Geologia, Universitat de Barcelona, Barcelona, Spain

Michał Kowalewski

michalk@vt.edu

Affiliation Department of Geosciences, Virginia Tech, Blacksburg, Virginia, United States of America

Rosa Domènech

Affiliation Institut de Recerca de la Biodiversitat and Facultat de Geologia, Universitat de Barcelona, Barcelona, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JM MK RD. Performed the experiments: JM MK RD. Analyzed the data: JM MK RD. Contributed reagents/materials/analysis tools: JM MK RD. Wrote the paper: JM MK RD.