Taxonomy and nomenclature of Sphenopteris and allied fossil-genera of Carboniferous seed-plant fronds

Christopher J. Cleal*, Barry A. Thomas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
42 Downloads (Pure)

Abstract

Most remains of Carboniferous lyginopteridalean seed-plant fronds used to be classified in a single fossil-genus (Sphenopteris) based mainly on pinnule morphology. By incorporating additional characters linked to frond architecture and rachial features a more natural taxonomy has now been achieved. Eight fossil-genera of lyginopteridalean fronds are now recognised (Sphenopteris, Calymmotheca, Eusphenopteris, Karinopteris, Mariopteris, Palmatopteris, Spathulopteris, Sphenopteridium) for which the diagnostic descriptions, nomenclatural types and stratigraphical/chronological distribution are clarified. This provides a more natural and therefore robust means of recording these fossils, which will help improve studies on past plant diversity and floristics. A by-product of this revision is that some fossil-species of fern fronds previously placed in Sphenopteris will need to be reclassified into fossil-genera that are defined on reproductive structures.
Original languageEnglish
Pages (from-to)862-879
Number of pages18
JournalTaxon
Volume72
Issue number4
Early online date29 May 2023
DOIs
Publication statusPublished - 11 Aug 2023

Keywords

  • adpressions
  • ferns
  • fronds
  • palaeobotany
  • pteridosperms

Fingerprint

Dive into the research topics of 'Taxonomy and nomenclature of Sphenopteris and allied fossil-genera of Carboniferous seed-plant fronds'. Together they form a unique fingerprint.

Cite this