About the Authors

Mariela S. Fernández

Affiliation Instituto de Investigaciones en Biodiversidad y Medioambiente, INIBIOMA - CONICET, San Carlos de Bariloche, Río Negro, Argentina

Rodolfo A. García

Affiliation Instituto de Investigación de Paleontología y Geología, Museo “Carlos Ameghino”, Universidad Nacional de Río Negro, Cipolletti, Río Negro, Argentina

Lucas Fiorelli

Affiliation Centro Regional de Investigaciones Científicas y Transferencia Tecnológica, CRILAR-CONICET, Anillaco, La Rioja, Argentina

Alejandro Scolaro

Affiliation Cátedra de Ecología, Universidad Nacional de la Patagonia San Juan Bosco y CENPAT-CONICET, Puerto Madryn, Chubut, Argentina

Rodrigo B. Salvador

Affiliation Museu de Zoologia, Universidade de São Paulo, São Paulo, São Paulo, Brazil

Carlos N. Cotaro

Affiliation Caracterización de Materiales, Centro Atómico Bariloche, San Carlos de Bariloche, Río Negro, Argentina

Gary W. Kaiser

Affiliation Natural History, Royal British Columbia Museum, Victoria, British Columbia, Canada

Gareth J. Dyke

gareth.dyke@soton.ac.uk

Affiliation Ocean and Earth Science, National Oceanography Centre, University of Southampton, Southampton, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MSF RAG LF AS RBS CNC GWK GJD. Performed the experiments: MSF RAG LF AS RBS CNC GWK GJD. Analyzed the data: MSF RAG LF AS RBS CNC GWK GJD. Contributed reagents/materials/analysis tools: MSF RAG LF AS RBS CNC GWK GJD. Wrote the paper: MSF RAG LF AS RBS CNC GWK GJD. Found, collected, prepared and imaged the fossils: MSF RAG LF AS RBS CNC.