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

  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},
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

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