About the Authors

Juan Carlos Cisneros


Affiliation Centro de Ciências da Natureza, Universidade Federal do Piauí, Teresina, Brazil

Uiara Gomes Cabral

Affiliation Departamento de Geologia e Paleontologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

Frikkie de Beer

Affiliation Nuclear Technology Division, South African Nuclear Energy Corporation, Pretoria, South Africa

Ross Damiani

Affiliation Staatliches Museum für Naturkunde Stuttgart, Stuttgart, Germany

Daniel Costa Fortier

Affiliation Departamento de Paleontologia e Estratigrafia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil

Competing Interests

One of the co-authors is employed at NECSA, one of the funders of the present study. This, however, does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JCC FdB RD. Performed the experiments: FdB. Analyzed the data: JCC UGC. Contributed reagents/materials/analysis tools: FdB. Wrote the paper: JCC UGC. Processed images: DCF.