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Research Article

Extreme Cranial Ontogeny in the Upper Cretaceous Dinosaur Pachycephalosaurus

  • 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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  • Published: October 27, 2009
  • DOI: 10.1371/journal.pone.0007626
  • Featured in PLOS Collections

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