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

Else Marie Friis (), Peter R. Crane, Kaj Raunsgaard Pedersen, Stefan Bengtson, Philip C. J. Donoghue, Guido W. Grimm and Marco Stampanoni ()
Additional contact information
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

Nature, 2007, vol. 450, issue 7169, 549-552

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).

Date: 2007
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/nature06278 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:450:y:2007:i:7169:d:10.1038_nature06278

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/nature06278

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().