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

  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},
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

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

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.

Plastome phylogenomic analysis reveals evolutionary divergences of Polypodiales suborder Dennstaedtiineae

This study supports reinstating a previously published family Monachosoraceae as a segregate from Dennstaedtiaceae, based on unique morphological evidence, the shady habitat, and the deep evolutionary divergence from its closest relatives.

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.

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

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

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



Investigating the Monophyly of Pellaea (Pteridaceae) in the Context of a Phylogenetic Analysis of Cheilanthoid Ferns

Results show that Pellaea sensu Tryon and Tryon is polyphyletic; Pellaea sections Holcochlaena and Ormopteris are distant relatives of sections Pellaea and Platyloma and have closer relationships with Doryopteris.

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.

Cheilanthoid Ferns (Pteridaceae: Cheilanthoideae) in the Southwestern United States and Adjacent Mexico-A Molecular Phylogenetic Reassessment of Generic Lines

Nucleotide sequences of the maternally inherited, chloroplast-encoded rbcL gene from 57 species that bear on the relationships of the cheilanthoids of the southwest were analyzed under the optimality criterion of maximum parsimony, providing new insights into phylogenetic re lationships and generic circumscriptions of these ferns.

Toward a monophyletic Notholaena (Pteridaceae) : resolving patterns of evolutionary convergence in xeric-adapted ferns

The phylogenetic hypothesis presented here helps to resolve outstanding nomenclatural issues and provides a basis for examining character evolution within this diverse, desert-adapted clade of ferns.

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

H. burmensis represents the first unequivocal fossil of a representative of the eupolypods from the middle Cretaceous and Reconstruction of ancestral character states suggests affinities of Holttumopteris to the Thelypteridaceae; however, several taxonomically relevant characters are not preserved.

Gaga, a New Fern Genus Segregated from Cheilanthes (Pteridaceae)

A monophyletic group of species within the hemionitid clade informally called the “C. marginata group” is shown to be distinct from its closest relatives (the genus Aspidotis) and phylogenetically distant from the type species of Cheilanthes.

A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data

A revised generic classification of vittarioid ferns (Pteridaceae) based on molecular, micromorphological, and geographic data is presented.