About the Authors

Maria Eugenia Leone Gold

egold@amnh.org

Affiliations Richard Gilder Graduate School, American Museum of Natural History, New York, New York, United States of America, Division of Paleontology, American Museum of Natural History, New York, New York, United States of America

Christopher A. Brochu

Affiliation Department of Earth and Environmental Sciences, University of Iowa, Iowa City, Iowa, United States of America

Mark A. Norell

Affiliations Richard Gilder Graduate School, American Museum of Natural History, New York, New York, United States of America, Division of Paleontology, American Museum of Natural History, New York, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MELG CAB MAN. Performed the experiments: MELG. Analyzed the data: MELG. Contributed reagents/materials/analysis tools: MELG CAB MAN. Wrote the paper: MELG CAB MAN.