About the Authors
- Mark A. Loewen
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* E-mail: mloewen@nhmu.utah.edu
Affiliation Natural History Museum of Utah and Department of Geology & Geophysics, University of Utah, Salt Lake City, Utah, United States of America
- Randall B. Irmis
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Affiliation Natural History Museum of Utah and Department of Geology & Geophysics, University of Utah, Salt Lake City, Utah, United States of America
- Joseph J. W. Sertich
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Affiliation Department of Earth Sciences, Denver Museum of Nature & Science, Denver, Colorado, United States of America
- Philip J. Currie
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Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
- Scott D. Sampson
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Affiliations Natural History Museum of Utah and Department of Geology & Geophysics, University of Utah, Salt Lake City, Utah, United States of America, Department of Earth Sciences, Denver Museum of Nature & Science, Denver, Colorado, United States of America
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: MAL. Performed the experiments: MAL RBI JJWS PJC SDS. Analyzed the data: MAL RBI JJWS PJC SDS. Wrote the paper: MAL RBI JJWS. Scored characters for taxa in the phylogenetic analysis: MAL RBI JJWS. Conducted the biogeographic analysis: MAL RBI.