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Research Article

Dinosaur Census Reveals Abundant Tyrannosaurus and Rare Ontogenetic Stages in the Upper Cretaceous Hell Creek Formation (Maastrichtian), Montana, USA

  • John R. Horner mail,

    jhorner@montana.edu

    Affiliation: Museum of the Rockies, Montana State University, Bozeman, Montana, United States of America

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  • Mark B. Goodwin,

    Affiliation: Museum of Paleontology, University of California, Berkeley, California, United States of America

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  • Nathan Myhrvold

    Affiliation: Intellectual Ventures, Bellevue, Washington, United States of America

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  • Published: February 09, 2011
  • DOI: 10.1371/journal.pone.0016574
  • Published in PLOS ONE

About the Authors

John R. Horner
Museum of the Rockies, Montana State University, Bozeman, Montana, United States of America
Mark B. Goodwin
Museum of Paleontology, University of California, Berkeley, California, United States of America
Nathan Myhrvold
Intellectual Ventures, Bellevue, Washington, United States of America

Corresponding Author

Email: jhorner@montana.edu

Competing Interests

Nathan Myhrvold contributed financially to the Hell Creek Project and intellectually to the design of the study.

Author Contributions

Conceived and designed the experiments: JH NM. Performed the experiments: JH MG. Analyzed the data: JH MG. Contributed reagents/materials/analysis tools: JH MG. Wrote the paper: JH MG.