ACKNOWLEDGMENTS
The author thanks S. Langreo and M. Llandres (MUPA) for allowing the study of these two coprolite specimens. The author especially thanks A. Jorge at the Museo Nacional de Ciencias Naturales for carrying out the SEM analyses, as well as C. Paradela for carrying out the CT-scan analyses. The author also thanks A. D. Buscalioni and F. J. Poyato-Ariza for discussing the different versions of the manuscript, as well as M. A. Fernández at the Department of Biology of Universidad Autónoma de Madrid for the digital camera. Comments and corrections by J. Kriwet and J. J. Cawley (University of Vienna) improved the manuscript. Funds were provided by the MINECO reference CGL2013-42643-P. The fellowship reference BES-2014-070985 is associated with this project.
ORCID
Sandra Barrios-de Pedro http://orcid.org/0000-0003-0123-0660