Franz-Josef Lindemann

• Leu, Marc; Schneebeli-Hermann, Elke; Hammer, Øyvind; Lindemann, Franz-Josef & Bucher, Hugo (2024). Spatiotemporal dynamics of nektonic biodiversity and vegetation shifts during the Smithian–Spathian transition: conodont and palynomorph insights from Svalbard. Lethaia: An International Journal of Palaeontology and Stratigraphy. ISSN 0024-1164. 57(2). doi: 10.18261/let.57.2.3. Fulltekst i vitenarkiv Vis sammendrag

  The Smithian–Spathian transition (~249.2 Ma) is marked by profound environmental changes, carbon cycle perturbations, and the stepwise loss of nektonic biodiversity (ammonoids and conodonts). While biotic and abiotic changes have been intensely studied for the palaeosubtropics and palaeotropics, the global spatio-temporal pattern, including mid- to higher latitudes, remains unresolved. In this study, we present conodont and palynomorph data from the Lower Triassic Vikinghøgda Formation in the Stensiöfjellet section, Svalbard. Conodont samples from this sequence generally yielded relatively few specimens with one exception in the basal Vendomdalen Member, which proved exceptionally abundant and diverse. Most conodont samples of the Lusitaniadalen Member are typically dominated by middle to late Smithian segminiplanate forms, such as Scythogondolella spp. This exceptional horizon in the basal Vendomdalen Member, associated with the cosmopolitan ammonoid Bajarunia, indicates an earliest Spathian age. This sample presents the first-ever recorded conodont fauna from the earliest Spathian in the Boreal realm and associates segminiplanate with numerous segminate forms. The presence of an abundant and diverse segminate conodont fauna in northern mid-latitudes during the Early Triassic suggests that temperature was not the main regulator for their distribution, as opposed to segminiplanate forms, which were apparently more restricted to colder waters. Palynomorphs are poorly preserved but allow the discrimination of three assemblages. Association 1 is lycophyte spore dominated, and associations 2 and 3 are both dominated by bisaccate pollen. The change from lycophyte-dominated to a gymnosperm-dominated vegetation occurs just above the Wasatchites beds. A comparison with the records from the southern palaeosubtropics indicates that the vegetation shift was synchronous and coincided with the onset of a cooling episode, commencing in the latest Smithian.

• Lindemann, Franz-Josef; Lindskog, Anders; Doyle, Peter; Stouge, Svend & Nakrem, Hans Arne (2023). Lethaia and Fossils and Strata are Open Access. I Nakrem, Hans Arne & Husås, Ann Mari (Red.), NGF 34. Geological Winter Meeting. January 4-6. 2023, Abstract volume. Norsk Geologisk Forening. ISSN 9788283470529. s. 54–55. Fulltekst i vitenarkiv
• Nakrem, Hans Arne; Lindemann, Franz-Josef; Hurum, Jørn Harald & Hammer, Øyvind (2023). Fossils From the Arctic in the Collections of the Natural History Museum in Oslo, Norway. Collections: A Journal for Museum and Archives Professionals. ISSN 1550-1906. 19(3). doi: 10.1177/15501906231159039. Fulltekst i vitenarkiv
• Wellman, Charles H.; Berry, Christopher M.; Davies, Neil S.; Lindemann, Franz-Josef; Marshall, John E. A. & Wyatt, Amy (2022). Low tropical diversity during the adaptive radiation of early land plants. Nature Plants. ISSN 2055-026X. 8(2), s. 104–109. doi: 10.1038/s41477-021-01067-w. Fulltekst i vitenarkiv Vis sammendrag

  The latitudinal biodiversity gradient, with tropical regions acting as ‘evolutionary cradles’, is a cornerstone of current biogeographical and ecological theory1. In the modern world floral biodiversity and biomass are overwhelmingly concentrated in the tropics, and it is often assumed that the tropics were evolutionary cradles throughout land plant evolutionary history. For example, the origination and diversification of angiosperms is believed to have taken place in the Cretaceous tropics2 and modern gymnosperms in the Permian tropics3. Here, we show that during the first major diversification of land plants, in the Late Silurian–Early Devonian, land plant biodiversity was much lower at the equator compared to medium-high southern latitudes. Throughout this crucial interval of plant evolution, tropical vegetation remained depauperate and of very low taxonomic biodiversity, although with similar morphological disparity to the more diverse higher latitude floras. Possible explanations for this low tropical floral biodiversity include palaeocontinental configuration or adverse palaeotropical environmental conditions. We discount the possibility that it was simply a fortuitous feature of the biogeographical spread of the earliest vascular land plants.

• Davies, Neil S.; Berry, Christopher M.; Marshall, John E.A.; Wellman, Charles H. & Lindemann, Franz-Josef (2021). The devonian landscape factory: Plant–sediment interactions in the old red sandstone of svalbard and the rise of vegetation as a biogeomorphic agent. Journal of the Geological Society. ISSN 0016-7649. 178(5). doi: 10.1144/jgs2020-225. Fulltekst i vitenarkiv Vis sammendrag

  The Devonian Period was a crucial interval in the evolution of plants. During its 60 myr duration, it witnessed the successive evolution of roots, wood, trees and forests. In addition, many of the biogeomorphic phenomena that operate in modern terrestrial environments came online for the first time. The ‘Old Red Sandstone’ of Svalbard consists of a near-continuous Silurian to Late Devonian record of sedimentary environments colonized by land plants and provides a perfect natural laboratory to aid our understanding of the facies signatures and evolution of these phenomena. We describe and illustrate a catalogue of ‘Old Red Sandstone’ features that provide evidence for the stepwise appearance of novel plant–sediment interactions, including preserved plant material and rooting structures, early large woody debris accumulations, cannel coal deposits and the oldest known vegetation-induced sedimentary structures, in addition to vegetation-influenced motifs of elevated mudrock content and complex alluvial sand bodies. These characteristics are combined to reconstruct changes to non-marine environments in this Devonian ‘landscape factory’. In addition to tectonic and climate influences, plant evolution first served as a control on the construction of the sedimentary record during this period and has persisted as a fundamental influence on Earth surface processes and landforms ever since.

• Lindemann, Franz-Josef (2010). Spitzbergen - Geologischer Überblick und die Exkursion des 11. Internationalen Geologischen Kongresses in Stockholm, 1910. Documenta naturae. ISSN 1433-1705. 57(3), s. 1–37. Fulltekst i vitenarkiv

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• Lindemann, Franz-Josef; Volohonsky, Eden & Marshall, John E. (2013). A bonebed in the Hørbyebreen Formation (Famennian-Viséan) on Spitsbergen. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef; Volohonsky, Eden & Marshall, John E. (2013). A bonebed in the Hørbyebreen Formation (Famennian-Viséan) on Spitsbergen. NGF Abstracts and Proceedings of the Geological Society of Norway. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef & Volohonsky, Eden (2012). An Early Carboniferous bonebed on Spitsbergen. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef & Volohonsky, Eden (2012). An Early Carboniferous bonebed on Spitsbergen. Terra Nostra. ISSN 0946-8978. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef (2011). Fossilsamlaren Fridtjof Nansen. GEO. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef (2010). Typesamlingar: Arkiv for etterprøving. GEO. 13(6), s. 56–56. Fulltekst i vitenarkiv
• Trønnes, Reidar G & Lindemann, Franz Josef (2007). Geologisk tidslinje - demonstrasjon i mineralsalen og paleontologisk sal. Geologiens dag. Fulltekst i vitenarkiv
• Lindemann, Franz Josef (2007). Carl von Linné og geologien. Naturen. ISSN 0028-0887. s. 260–278. Fulltekst i vitenarkiv
• Lindemann, Franz-Josef (2007). Geologisk tidsløpar (jordas utvikling). Fulltekst i vitenarkiv
• Lindemann, Franz Josef (2007). Carl von Linné og geologien. Fulltekst i vitenarkiv
• Lindemann, Franz Josef (2006). The Early Triassic "Fish Niveau" on Spitsbergen and the habitat of the contained temnospondyls (Amphibia). Abstracts and Proceedings of the Geological Society of Norway. 3, s. 94–96. Fulltekst i vitenarkiv
• Lindemann, Franz Josef (2006). The Early Triassic "Fish Niveau" on Spitsbergen and the habitat of the contained temnospondyls (Amphibia). Fulltekst i vitenarkiv
• Lindemann, Franz Josef (2004). SASSENISAURUS UND DIE SYSTEMATISCHE STELLUNG DER WETLUGASAURIDEN. Fulltekst i vitenarkiv
• Nakrem, Hans Arne; Hurum, Jørn Harald & Lindemann, Franz Josef (2001). Paleontologisk museums samlinger ogt utstillinger på internett. Fulltekst i vitenarkiv
• Nakrem, Hans Arne & Lindemann, Franz Josef (1989). Norsk Paleontologisk Forening 1969-1989. Sammendrag av foredrag presentert på Norsk Paleontologisk Forenings jubileums-møte 4. og 5. desember 1989, Institutt for geologi, Universitetet i Oslo. Paleontologisk museum. Fulltekst i vitenarkiv

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