| 1. |
- Launis, Ahti, et al.
(författare)
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A glimpse into the Carnian: Late Triassic plant fossils from Hopen, Svalbard
- 2015
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Ingår i: Norwegian Petroleum Directorate Bulletin. - Stavanger. - 0808-1409. ; 11, s. 129-136
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Tidskriftsartikel (refereegranskat)abstract
- A small number of well-preserved plant fossils have been collected during recent fieldwork on Hopen in the Svalbard archipelago. The assemblage shows a composition typical of Carnian floras from central Europe and complements a recent study of old collections of Upper Triassic plant fossils from Svalbard. The new findings include already described species and some possibly new for Svalbard. The plant fossils are from well-dated Carnian beds on Hopen and confirm the earlier assumed Carnian age for plants collected on Svalbard from Upper Triassic sediments. A remarkable feature of this flora is the high number of plants, which are also described from Carnian floras from Austria and Switzerland, but also recorded from Franz Josef Land and other Arctic areas. The stratigraphic value of this flora is discussed.
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| 2. |
- Pott, Christian, et al.
(författare)
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Taeniopteris novomundensis sp. nov. — "cycadophyte" foliage from the Carnian of Switzerland and Svalbard reconsidered: How to use Taeniopteris?
- 2015
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Ingår i: Neues Jahrbuch für Geologie und Palaontologie - Abhandlungen. - Stuttgart : Schweizerbart. - 0077-7749. ; 275:1, s. 19-31
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Tidskriftsartikel (refereegranskat)abstract
- Recent findings of Taeniopteris-like foliage from the Carnian of Hopen, Svalbard, necessitated the re-evaluation of entire-margined Taeniopteris foliage from the Carnian flora of Neuewelt, Basel, Switzerland, revealing the illegitimate status of Taeniopteris angustifolia. The specimen from the Ladinian or Carnian (Lower Keuper) of Lower Franconia, Germany, on which the identification was based, was recently identified as the holotype of the marattialean fern Danaeopsis angustifolia, of which Taeniopteris angustifolia is the basionym. This implies that the Neuewelt specimens, which are different from the specimens from Franconia, lack any type and basionym, and a new species name is required. The specimens from Hopen as well as specimens elsewhere from Svalbard are identified as conspecific with the specimens from Neuewelt, and we here assign all specimens to Taeniopteris novomundensis sp. nov., which is thus known from the Carnian of Switzerland and Svalbard. Information on epidermal anatomy is not available, and the affinity of the species can, therefore, not be elucidated further, but is here interpreted as a cycadophyte. Several specimens from the Carnian of Franconia assigned to Taeniopteris angustifolia belong to a species different from Taeniopteris novomundensis, i.e. Taeniopteris kelberi. Earlier inclusion of some of the specimens now assigned to Taeniopteris novomundensis in Taeniopteris kelberi is unsupported. The typification and use of Taeniopteris are discussed in this framework.
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