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Research Article

Bird-Like Anatomy, Posture, and Behavior Revealed by an Early Jurassic Theropod Dinosaur Resting Trace

  • Andrew R. C. Milner mail,

    amilner@sgcity.org

    Affiliation: St. George Dinosaur Discovery Site at Johnson Farm, St. George, Utah, United States of America

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  • Jerald D. Harris,

    Affiliation: Dixie State College, St. George, Utah, United States of America

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  • Martin G. Lockley,

    Affiliation: Dinosaur Tracks Museum, University of Colorado at Denver, Denver, Colorado, United States of America

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  • James I. Kirkland,

    Affiliation: Utah Geological Survey, Salt Lake City, Utah, United States of America

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  • Neffra A. Matthews

    Affiliation: National Operations Center, USDOI-Bureau of Land Management, Denver, Colorado, United States of America

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  • Published: March 04, 2009
  • DOI: 10.1371/journal.pone.0004591
  • Featured in PLOS Collections

About the Authors

Andrew R. C. Milner
St. George Dinosaur Discovery Site at Johnson Farm, St. George, Utah, United States of America
Jerald D. Harris
Dixie State College, St. George, Utah, United States of America
Martin G. Lockley
Dinosaur Tracks Museum, University of Colorado at Denver, Denver, Colorado, United States of America
James I. Kirkland
Utah Geological Survey, Salt Lake City, Utah, United States of America
Neffra A. Matthews
National Operations Center, USDOI-Bureau of Land Management, Denver, Colorado, United States of America

Corresponding Author

Email: amilner@sgcity.org

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ARCM JDH ML JK. Performed the experiments: ARCM JDH ML JK. Analyzed the data: ARCM JDH ML JK NAM. Contributed reagents/materials/analysis tools: NAM. Wrote the paper: ARCM JDH.