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- Title
Former diversity of Ephedra (Gnetales): evidence from Early Cretaceous seeds from Portugal and North America.
- Authors
Rydin, Catarina; Pedersen, Kaj Raunsgaard; Crane, Peter R; Friis, Else Marie
- Abstract
The extant species of the seed plant group Gnetales (Ephedra, Gnetum and Welwitschia) have been considered a remnant of a much greater, now extinct, diversity due to the pronounced differences in form and ecology among the genera. Until recently, this hypothesis has not been supported by evidence from the fossil record. This paper adds to the expanding information on Gnetales from the Early Cretaceous and describes coalified seeds from Barremian-Albian localities in Portugal and USA.
- Publication
Annals of botany, 2006, Vol 98, Issue 1, p123
- ISSN
0305-7364
- Publication type
Journal Article
- DOI
10.1093/aob/mcl078