About the Authors

Marc A. Carrasco

carrasco@berkeley.edu

Affiliations Department of Integrative Biology, University of California, Berkeley, California, United States of America, Museum of Paleontology, University of California, Berkeley, California, United States of America

Anthony D. Barnosky

Affiliations Department of Integrative Biology, University of California, Berkeley, California, United States of America, Museum of Paleontology, University of California, Berkeley, California, United States of America, Museum of Vertebrate Zoology, University of California, Berkeley, California, United States of America

Russell W. Graham

Affiliations Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania, United States of America, Earth and Mineral Sciences Museum, The Pennsylvania State University, University Park, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MAC ADB. Performed the experiments: MAC. Analyzed the data: MAC ADB RG. Wrote the paper: MAC ADB. Contributed the FAUNMAP I and II databases: RG.