About the Authors
- Nancy Knowlton
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* E-mail: knowltonn@gmail.com
Affiliation National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, United States of America
- Emanuele Di Lorenzo
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Affiliation Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, Rhode Island, United States of America
Competing Interests
The authors have declared that no competing interests exist.