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Collinson, M.E. (1996) What Use Are Fossil Ferns? 20 Years on: With a Review of the Fossil History of Extant Pteridophyte Families and Genera. In: Camus, J.M., Johns, R.J. and Gibby, M., Eds., Pteridology in Perspective, Royal Botanic Gardens, Kew, 349-394.

has been cited by the following article:

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

  AUTHORS: Cunxiang Li, Libing Zhang

  KEYWORDS: Mid-Cretaceous, Myanmar Amber, Eupolypods, Divergence Time

  JOURNAL NAME: Open Journal of Geology, Vol.9 No.10, September 27, 2019

  ABSTRACT: 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 provides a unique source of polypod fossils. Different families and numerous sporangia, spores, and scales have been found in Myanmar amber. These discoveries are nevertheless important because they provided the first unequivocal fossil evidence that the diversity of eupolypod ferns was present already in the mid-Cretaceous Myanmar amber forest. This clearly shows that Eupolypods originated before mid-Cretaceous, probably as early as the Early Jurassic, which is consistent with the recent divergence time estimate based on molecular dating.