Fossil evidence of eupolypod ferns in the mid-Cretaceous of Myanmar

@article{Regalado2017FossilEO,
  title={Fossil evidence of eupolypod ferns in the mid-Cretaceous of Myanmar},
  author={Ledis Regalado and Alexander R. Schmidt and Michael Krings and Julia Bechteler and Harald Schneider and Jochen Heinrichs},
  journal={Plant Systematics and Evolution},
  year={2017},
  volume={304},
  pages={1-13}
}
Abstract Divergence time estimates based on DNA sequence variation of extant species suggest that eupolypod ferns were diverse already in the Cretaceous; however, fossil evidence to support this assumption remains exceedingly rare. Holttumopteris burmensis gen. et sp. nov., a fertile fern foliage fragment preserved in a piece of Albian–Cenomanian Burmese amber from Myanmar, is characterized by divided fertile leaves with catadromous, free lateral veins. Sporangia possess a vertical annulus… 

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References

SHOWING 1-10 OF 107 REFERENCES

Cyathea cranhamii sp. nov. (Cyatheaceae), anatomically preserved tree fern sori from the Lower Cretaceous of Vancouver Island, British Columbia.

Permineralized cyatheaceous sori occur among remains of conifers, fungi, and other plants in newly discovered calcareous concretions from Early Cretaceous (Barremian) marine sediments of Vancouver

Fossiliferous Cretaceous Amber from Myanmar (Burma): Its Rediscovery, Biotic Diversity, and Paleontological Significance

The stratigraphic distribution of exclusively Mesozoic arthropods in Burmese amber is reviewed, which indicates a probable Turonian-Cenomanian age of this material.

Ferns diversified in the shadow of angiosperms

It is shown that polypod ferns (> 80% of living fern species) diversified in the Cretaceous, after angiosperms, suggesting perhaps an ecological opportunistic response to the diversification of angios perms, as angiosPerms came to dominate terrestrial ecosystems.

A review of selected triassic to Early Cretaceous ferns

After becoming nearly extinct during the Permian, the ferns began a slow recovery during the Triassic as the climate of the earth moderated, but with the rapid expansion of the angiosperms during the Late Cretaceous, they once again became reduced in variety and greatly restricted in distribution.
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