About the Authors

Silvina de Valais

sdevalais@yahoo.com.ar

Affiliation CONICET - Instituto de Investigación en Paleobiología y Geología, Universidad Nacional de Río Negro, Fisque Menuco (General Roca), Río Negro, Argentina

Sebastián Apesteguía

Affiliation CONICET - Fundación de Historia Natural “Félix de Azara”, CEBBAD, Universidad Maimónides, Buenos Aires, Argentina

Alberto C. Garrido

Affiliation Museo Provincial de Ciencias Naturales “Prof. Dr. Juan A. Olsacher” – Dirección Provincial de Minería, Zapala, Neuquén, Argentina

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SdV SA. Performed the experiments: SdV SA. Analyzed the data: SdV SA ACG. Contributed reagents/materials/analysis tools: SdV SA ACG. Wrote the paper: SdV SA. Obtained permission for fieldwork: SA.