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Former Diversity of Ephedra (Gnetales): Evidence from Early Cretaceous Seeds from Portugal and North America
• Background and Aims 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 su...
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| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado: |
Oxford University Press
2006
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| Assuntos: | |
| Acceso en liña: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2803531/ https://ncbi.nlm.nih.gov/pubmed/16675607 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1093/aob/mcl078 |
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