Browsing Museene by Author "Nakrem, Hans Arne"

Now showing items 1-12 of 12

  • Cambrian (Series 3 - furongian) conodonts from the alum shale formation at Slemmestad, Oslo region, Norway 
    Kleppe, Katarina Skagestad; Nakrem, Hans Arne; Stouge, Svend (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Nine samples from the Alum Shale of Slemmestad, Oslo Region, were processed for conodonts. The limestone-rich interval extending from the mid Cambrian Paradoxides paradoxissimus trilobite Zone to the Lower Ordovician ...
  • Environmental significance and taxonomy of well preserved foraminifera from Upper Jurassic – Lower Cretaceous hydrocarbon seep carbonates, central Spitsbergen 
    Hjalmarsdottir, Hanna Rosa; Nakrem, Hans Arne; Nagy, Jenø (Journal article / Tidsskriftartikkel / SubmittedVersion, 2018)
    Five hydrocarbon seep carbonate structures in the upper part of the Slottsmøya Member (Agardhfjellet Formation) in central Spitsbergen have been sampled and processed for foraminifera. The carbonates have been found to ...
  • Mass extinction or extirpation: Permian biotic turnovers in the northwestern margin of Pangea 
    Lee, Sangmin; Shi, G.R.; Nakrem, Hans Arne; Woo, Jusun; Tazawa, Jun-Ichi (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2022)
    Abstract The Capitanian (Middle Permian) mass extinction event, prior to and separate from the end-Permian mass extinction, has been suggested as a severe biotic crisis comparable to the big five mass extinctions ...
  • Mesozoic marine reptiles from Spitsbergen and their ecosystems 
    Delsett, Lene Liebe; Druckenmiller, Patrick Scott; Hammer, Øyvind; Hryniewicz, Krzysztof; Knutsen, Espen Madsen; Koevoets, Maayke Jacqueline; Nakrem, Hans Arne; Roberts, Aubrey Jane; Hurum, Jørn Harald (Journal article / Tidsskriftartikkel / SubmittedVersion, 2019)
    In the Mesozoic seas, the apex predators were reptiles. From the Arctic archipelago of Svalbard, the Spitsbergen Mesozoic Research Group has excavated numerous well preserved marine reptile skeletons in order to understand ...
  • Palynology of Early Cretaceous (Barremian to Aptian) hydrocarbon (methane) seep carbonates and associated mudstones, Wollaston Forland, Northeast Greenland 
    Bang, Emil; Nakrem, Hans Arne; LITTLE, CRISPIN T.S.; Kürschner, Wolfram Michael; Kelly, Simon R.A.; Smelror, Morten (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Palynostratigraphic and palynofacies analysis have been performed on hydrocarbon seep carbonate, carbonate nodule and mudstone samples from the Early Cretaceous Kuhnpasset Beds in the Kuhnpasset area of Wollaston Forland, ...
  • Protected Geosites in an Urban Area of Norway, Inventories, Values, and Management 
    Erikstad, Lars; Nakrem, Hans Arne; Markussen, J.A. (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    The Oslo area has a rich geodiversity, a long history of scientific investigations, and several protected geosites. Many of the protected geosites were protected some 30 years ago and have until recently not been followed ...
  • Responses of the biogeochemical sulfur cycle to Early Permian tectonic and climatic events 
    Kwon, Hyosang; Woo, Jusun; Oh, Jae-Ryong; Joo, Young Ji; Lee, Sangmin; Nakrem, Hans Arne; Sim, Min Sub (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    The late Paleozoic was characterized by a series of continental collisions and ice ages. Despite the drastic environmental changes, sparse sulfur isotope data hinder our understanding of the late Paleozoic biogeochemical ...
  • Stratigraphy and age of the Grippia niveau bonebed, Lower Triassic Vikinghøgda Formation, Spitsbergen 
    Hansen, Bitten Bolvig; Hammer, Øyvind; Nakrem, Hans Arne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    We report on a newly excavated Spathian (Lower Triassic) bonebed on Marmierfjellet, Central Spitsbergen. The bonebed contains a varied material of bones and teeth from marine vertebrates along with conodont elements. The ...
  • The history of exploration and stratigraphy of the Early to Middle Triassic vertebrate-bearing strata of Svalbard (Sassendalen Group, Spitsbergen) 
    Hurum, Jørn Harald; Engelschiøn, Victoria Sjøholt; Økland, Inghild Halvorsen; Bratvold, Janne; Ekeheien, Christina; Roberts, Aubrey Jane; Delsett, Lene Liebe; Hansen, Bitten Bolvig; Mørk, Atle; Nakrem, Hans Arne; Druckenmiller, Patrick Scott; Hammer, Øyvind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The palaeontology of the Lower to Middle Triassic succession in Spitsbergen has been studied for more than a century and a half. Our ability to properly interpret the evolutionary and ecological implications of the faunas ...
  • The origin of telemarkites from the mesoproterozoic of telemark, Norway 
    Gyøry, Emil; Hammer, Øyvind; Jorde, Knut; Nakrem, Hans Arne; Swajda, Michael; Domeier, Mathew (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    The possible macrofossil Telemarkites enigmaticus from the Mesoproterozoic Gjuve Formation, Telemark supracrustals, southern Norway, was described by Dons in 1959. We here present finds of similar, but larger structures ...
  • Two trepostome bryozoans from the Assistance Formation (Permian, Roadian) near Lake Hazen, Ellesmere Island, Canada 
    Ernst, Andrej; Nakrem, Hans Arne (Journal article / Tidsskriftartikkel / SubmittedVersion, 2021)
    Rhombotrypella superangustata and Dyscritellina fuglensis (Bryozoa, Trepostomata) were found for the first time in the Assistance Formation of Ellesmere Island, Canada. Both species correlate the Roadian age of the Assistance ...
  • Varia 55 Svinesundprosjektet. Bind 2. 
    Glørstad, Håkon; Høeg, Helge Irgens; Jaksland, Lasse; Johansen, Kristine Beate; Nakrem, Hans Arne; Rønne, Ola; Tørhaug, Vanja; Gjesvold, Per Erik (Series / Seriehefte, 2003)
    Svinesundprosjektet er et forvaltningsinitsiert utgravningsprosjekt organisert og administrert av Universitetets kulturhistoriske museer (UKM). Prosjektet vil gå over en femårsperiode, fra år 2000 til 2004. Bakgrunnen for ...