A relatively new imaging technique is used to reveal that some Cretaceous gymnosperm seeds have evolutionary links with Gnetales (an evolutionarily hard-to-place gymnosperm group with three living genera) and the Bennetitales (an extinct group of cycad-like plants). The link between Gnetales and Bennetitales may have important consequences for our understanding of the evolution of seed plants, including flowering plants.
- Else Marie Friis
- Peter R. Crane
- Marco Stampanoni
