IDEAS home Printed from https://ideas.repec.org/a/nat/nature/v450y2007i7169d10.1038_nature06278.html
   My bibliography  Save this article

Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales

Author

Listed:
  • Else Marie Friis

    (Swedish Museum of Natural History, SE-104 05 Stockholm, Sweden)

  • Peter R. Crane

    (University of Chicago, Chicago, Illinois 60637, USA)

  • Kaj Raunsgaard Pedersen

    (University of Aarhus)

  • Stefan Bengtson

    (Swedish Museum of Natural History, SE-104 05 Stockholm, Sweden)

  • Philip C. J. Donoghue

    (University of Bristol)

  • Guido W. Grimm

    (Institute of Geosciences, Eberhard-Karls-University, D-72076 Tübingen, Germany)

  • Marco Stampanoni

    (Swiss Light Source, Paul Scherrer Institut)

Abstract

Gymnosperms: gone to seed The study of the emergence of flowering plants has been revolutionized over the past 25 years by the discovery of many exquisitely preserved fossil flowers. But fossil gymnosperms (conifers) have received less attention. Friis et al. have used a recently developed synchrotron radiation X-ray tomographic technique to redress the balance. Their images reveal internal structures at very high resolution. The seed structures of some Cretaceous gymnosperms suggest evolutionary links with Gnetales (an obscure and evolutionarily hard-to-place gymnosperm group with three living genera) and the Bennettitales (an important extinct group of cycad-like plants).

Suggested Citation

  • Else Marie Friis & Peter R. Crane & Kaj Raunsgaard Pedersen & Stefan Bengtson & Philip C. J. Donoghue & Guido W. Grimm & Marco Stampanoni, 2007. "Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales," Nature, Nature, vol. 450(7169), pages 549-552, November.
    • Handle: RePEc:nat:nature:v:450:y:2007:i:7169:d:10.1038_nature06278
    DOI: 10.1038/nature06278
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/nature06278
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1038/nature06278?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:450:y:2007:i:7169:d:10.1038_nature06278. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.