Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Megaspores from the Late Triassic‒Early Jurassic of southern Scandinavia: taxonomic and biostratigraphic implications
Swedish Museum of Natural History, Department of Paleobiology. aState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing.
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0003-1766-3516
Swedish Museum of Natural History, Department of Paleobiology. Department of Geology, Lund University, Sweden.ORCID iD: 0000-0003-2987-5559
2021 (English)In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 143, no 2-3, p. 202-228Article in journal (Refereed) Published
Abstract [en]

Here we investigate megaspores from 10 Triassic‒Jurassic localities of southern Sweden and Bornholm, Denmark, based on collections housed in the Swedish Museum of Natural History. We identify and describe 19 megaspore taxa belonging to three stratigraphically constrained assemblages, representing the Rhaetian, Hettangian and Pliensbachian, respectively. Megaspores are abundant and diverse (12 taxa) in the Rhaetian assemblage. Diversity markedly decreases across the Triassic–Jurassic boundary (TJB), with species richness reducing from 12 to two taxa. The Hettangian assemblage is well-preserved but depauperate, and is overwhelmingly dominated by Nathorstisporites hopliticus. A subsequent recovery of lycopsid diversity followed, recorded by an increase in richness to six taxa in the Pliensbachian assemblage. The disappearance of the hygrophilous and diverse heterosporous lycophyte communities acrossthe TJB, suggests a shift to drier conditions in the earliest Jurassic. This is supported by lithological changes from coal-forming environments in the Rhaetian to sandstone-dominated fluvial-estuarine facies in the Hettangian. Throughout this study, we analysed the megaspores using fluorescence microscopy, which revealed detailed morphological features on specimens that were otherwise opaque under visible light. This non-destructive technique is particularly useful for examining opaque megaspores embedded in permanent mounting media, such as epoxy resin, and may provide new insights into historical megaspore collections elsewhere.

Place, publisher, year, edition, pages
London: Taylor & Francis, 2021. Vol. 143, no 2-3, p. 202-228
Keywords [en]
Heterosporous lycopsids, UV fluorescence microscopy, end-Triassic mass extinction, Skåne (Scania), Sweden, Bornholm, Denmark
National Category
Other Earth and Related Environmental Sciences
Research subject
Diversity of life; Ecosystems and species history; The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-4450DOI: 10.1080/11035897.2021.1923060OAI: oai:DiVA.org:nrm-4450DiVA, id: diva2:1618007
Funder
Carl Tryggers foundation , 19:380Swedish Research Council, 2019-04524Swedish Research Council, 2019-4061
Note

Also funded by This research was supported by the National Natural Sciences Foundationof China (NSFC 42002003) and the State Key Laboratory of Palaeobiologyand Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)(20182110) for J.P.

Available from: 2021-12-01 Created: 2021-12-08Bibliographically approved

Open Access in DiVA

fulltext(42001 kB)81 downloads
File information
File name FULLTEXT01.pdfFile size 42001 kBChecksum SHA-512
42e101ec39b38d093ddca48b4ad1d76d58e18b54fe6dcdff0b96b7ef4b09c330481409d6686c2847c63576b3be8d1f07e947dda09e918a01e1b95b0d492cb439
Type fulltextMimetype application/pdf

Other links

Publisher's full texthttps://doi.org/10.1080/11035897.2021.1923060

Search in DiVA

By author/editor
Peng, JungangSlater, Sam MVajda, Vivi
By organisation
Department of Paleobiology
In the same journal
GFF
Other Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 81 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 67 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf