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… 

Diversification of Eupolypods in Mid-Cretaceous—Evidenced by Myanmar Amber Forest

The evolutionary history of Eupolypods still remains unclear, especially on its diversification scenarios. In recent years, it has been found that approximately 100 million-year-old Myanmar amber

A fossil species of the enigmatic early polypod fern genus Cystodium (Cystodiaceae) in Cretaceous amber from Myanmar

The fossil strengthens the hypothesis that the forest ecosystems of Malesia and Melanesia represent refugia for many tropical plant lineages that originated in the Cretaceous.

Heinrichsia cheilanthoides gen. et sp. nov., a fossil fern in the family Pteridaceae (Polypodiales) from the Cretaceous amber forests of Myanmar

Heinrichsia cheilanthoides further substantiates the suggestion that the Cretaceous forests of Myanmar were home to a rich fern flora and provides a new calibration point to test and refine molecular clock‐based concepts of the evolutionary history of the Pteridaceae.

Simultaneous diversification of Polypodiales and angiosperms in the Mesozoic

The estimated divergence patterns of Polypodiales and angiosperms converge to a scenario in which their main lineages were established simultaneously shortly before the onset of the Cretaceous Terrestrial Revolution, and further suggest a pre‐Cretaceous hidden history for both lineages.

Filmy Ferns (Hymenophyllaceae) and Associated Spike-Mosses (Selaginellaceae) from the Mid-Cretaceous Kachin Amber, Myanmar

Three new species of filmy ferns are described in mid-Cretaceous Kachin amber, which represent the first fossil record of Hymenophyllaceae from tropical Asia and greatly expand the diversity of the cryptogams in KachIn amber and provide additional evidence regarding the paleoenvironment.

Selaginella in Cretaceous amber from Myanmar

Abstract: Selaginella (Selaginellales, Selaginellaceae) is the most speciose genus of lycophytes and, with approximately 750 recognized present-day species, also one of the largest genera of vascular

How diverse were ferns in the Baltic amber forest?

It is suggested that the scarcity of fern remains from Baltic amber may reflect both a relatively low fern diversity in the source area of the fossil resin, and an absence or rarity of epiphytic and climbing ferns as observed in modern temperate forest ecosystems.

Anatomical examination of the petiole of eupolypods I (Polypodiales)

Based on the results, a taxonomic key to the families of eupolypods I was constructed and showed five taxonomically significant characters that can serve as family markers.

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