
Per Ahlberg
Professor emeritus

Late Ordovician (Katian) spores in Sweden : oldest land plant remains from Baltica
Författare
Summary, in English
A palynologial study of the Ordovician-Silurian boundary (Katian–Rhuddanian) succession in the Röstånga-1 drillcore, southern Sweden, has been performed. The lithology is dominated by mudstone and graptolitic shale, with subordinate limestone, formed in the deeper marine halo of southern Baltica. The palynological assemblages are dominated by marine microfossils, mainly chitinozoans and acritarchs. Sparse but well preserved cryptospores, including Tetrahedraletes medinensis, T. grayii and Pseudodyadospora sp., were encountered in the Lindegård Formation (late Katian–early Hirnantian), with the oldest record just above the first appearance of the graptolite species Dicellograptus complanatus. This represents the earliest record of early land plant spores from Sweden and possibly also from Baltica and implies that land plants had migrated to the palaeocontinent Baltica by at least the Late Ordovician.
Avdelning/ar
- Berggrundsgeologi
Publiceringsår
2014
Språk
Engelska
Sidor
16-21
Publikation/Tidskrift/Serie
GFF
Volym
136
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
Taylor & Francis
Ämne
- Geology
Nyckelord
- Stratigraphy
- palynology
- Thermal Alteration Index (TAI)
- Ordovician
- Silurian
- Röstånga-1 drillcore
- Skåne
- Sweden
Aktiv
Published
ISBN/ISSN/Övrigt
- ISSN: 2000-0863