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Research Article

Oldest Known Eucalyptus Macrofossils Are from South America

  • María A. Gandolfo equal contributor mail,

    equal contributor Contributed equally to this work with: María A. Gandolfo, Elizabeth J. Hermsen

    mag4@cornell.edu

    Affiliation: L.H. Bailey Hortorium, Department of Plant Biology, Cornell University, Ithaca, New York, United States of America

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  • Elizabeth J. Hermsen equal contributor,

    equal contributor Contributed equally to this work with: María A. Gandolfo, Elizabeth J. Hermsen

    Affiliation: L.H. Bailey Hortorium, Department of Plant Biology, Cornell University, Ithaca, New York, United States of America

    X
  • María C. Zamaloa,

    Affiliation: Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Capital Federal, Buenos Aires, Argentina

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  • Kevin C. Nixon,

    Affiliation: L.H. Bailey Hortorium, Department of Plant Biology, Cornell University, Ithaca, New York, United States of America

    X
  • Cynthia C. González,

    Affiliation: Museo Paleontológico Egidio Feruglio-Consejo Nacional de Investigaciones Científicas y Técnicas, Trelew, Chubut, Argentina

    X
  • Peter Wilf,

    Affiliation: Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania, United States of America

    X
  • N. Rubén Cúneo,

    Affiliation: Museo Paleontológico Egidio Feruglio-Consejo Nacional de Investigaciones Científicas y Técnicas, Trelew, Chubut, Argentina

    X
  • Kirk R. Johnson

    Affiliation: Denver Museum of Nature and Science, Denver, Colorado, United States of America

    X
  • Published: June 28, 2011
  • DOI: 10.1371/journal.pone.0021084
  • Featured in PLOS Collections

About the Authors

María A. Gandolfo, Elizabeth J. Hermsen, Kevin C. Nixon
L.H. Bailey Hortorium, Department of Plant Biology, Cornell University, Ithaca, New York, United States of America
María C. Zamaloa
Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Capital Federal, Buenos Aires, Argentina
Cynthia C. González, N. Rubén Cúneo
Museo Paleontológico Egidio Feruglio-Consejo Nacional de Investigaciones Científicas y Técnicas, Trelew, Chubut, Argentina
Peter Wilf
Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania, United States of America
Kirk R. Johnson
Denver Museum of Nature and Science, Denver, Colorado, United States of America

Corresponding Author

Email: mag4@cornell.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Collected and identified specimens from field localities: MAG EJH MCZ PW NRC CCG KRJ. Drafted the original text of the manuscript and developed and scored the morphological matrix: MAG EJH. Examined and prepared the description of the specimens: MAG MCZ. Modified the molecular sequence dataset: EJH. Performed phylogenetic analyses and contributed text to the methods sections pertaining to the analyses: KCN. Photographed specimens: MAG EJH CCG. Contributed text on the biogeographical and ecological interpretations of the Laguna del Hunco flora: PW. All authors commented on and approved this version of the manuscript.