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

@article{Regalado2019HeinrichsiaCG,
  title={Heinrichsia cheilanthoides gen. et sp. nov., a fossil fern in the family Pteridaceae (Polypodiales) from the Cretaceous amber forests of Myanmar},
  author={Ledis Regalado and Alexander R. Schmidt and Patrick M{\"u}ller and Lisa Niedermeier and Michael Krings and Harald Schneider},
  journal={Journal of Systematics and Evolution},
  year={2019},
  volume={57}
}
Divergence time estimates suggest that most clades constituting the fern family Pteridaceae (Polypodiales) were in existence by the Early Cretaceous. However, fossil evidence to corroborate this remains exceedingly rare. Burmese amber is an important source of new information on the radiation of derived fern lineages during the Cretaceous Terrestrial Revolution. This study describes Heinrichsia cheilanthoides gen. et sp. nov., a fern with suggested affinities to Pteridaceae, based on fertile… 
Morphological stasis in the first myxomycete from the Mesozoic, and the likely role of cryptobiosis
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An exquisitely preserved myxomycete sporocarps in amber from Myanmar is reported, demonstrating that sporocarp morphology has been static since at least the mid-Cretaceous and interpreting Stemonitis morphological stasis as evidence of strong environmental selection favouring the maintenance of adaptations that promote wind dispersal.
Simultaneous diversification of Polypodiales and angiosperms in the Mesozoic
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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.
How diverse were ferns in the Baltic amber forest?
TLDR
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.
Selaginella was hyperdiverse already in the Cretaceous.
The spike mosses (Selaginella P.Beauv.; c. 750 species) are not only the most speciose extant genus of lycophytes, but also one of the largest land plant genera (Jermy, 1990). In addition to the
Celebrating Research Devoted to Seed‐Free Land Plants
  • H. Schneider
  • Environmental Science
    Journal of Systematics and Evolution
  • 2019
This special issue celebrates the unique diversity of seed‐free land plants (SFLP) and in particular the contribution of Jochen Heinrichs (1969–2018), who dedicated his research to the study of the

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