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dc.date.accessioned2019-12-02T19:41:18Z
dc.date.available2019-12-02T19:41:18Z
dc.date.created2018-12-05T10:52:33Z
dc.date.issued2018
dc.identifier.citationBratvold, Janne Delsett, Lene Liebe Hurum, Jørn Harald . Chondrichthyans from the Grippia bonebed (Early Triassic) of Marmierfjellet, Spitsbergen. Norwegian Journal of Geology. 2018, 98(2), 189-218
dc.identifier.urihttp://hdl.handle.net/10852/71103
dc.description.abstractThe Grippia bonebed is located at Marmierfjellet in Flowerdalen, Isfjorden area of Spitsbergen. The bonebed occurs in the Vendomdalen Member, Vikinghogda Formation, Early Triassic (Spathian). It is unique in Spitsbergen because of the richness of chondrichthyans, osteichthyes, amphibians and ichthyopterygians. This paper focuses on the chondrichthyans with more than 550 chondrichthyan teeth studied, together with three fin spines and one cephalic spine, assigned to 7 genera and 15 species, 8 of which are new from the Grippia niveau. The Hybodontiformes represent five of the identified genera, where most of the identified species belong to Hybodus and Acrodus. Hybodus sasseniensis, previously recorded from the older Dienarian substage, and is now shown to occur in the younger Spathian substage, and suggested to be the senior synonym of H. rapax. The possibility of Acrodus scaber and A. spitzbergensis being morphospecies, and the Acrodus genus in general, is further discussed. The occurrence of Hybodus microdus in the material is uncertain since it is shown that the mesio-distal length of the teeth is much larger than described by Stensio in 1921. The Neoselachii (modern shark), previously only known from a fin spine of Nemacanthus from the Triassic of Spitsbergen, is now described from teeth belonging to possibly two new neoselachian species. They are referred to Synechodontiformes 1 and 2, awaiting more material to be processed.
dc.languageEN
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleChondrichthyans from the Grippia bonebed (Early Triassic) of Marmierfjellet, Spitsbergen
dc.typeJournal article
dc.creator.authorBratvold, Janne
dc.creator.authorDelsett, Lene Liebe
dc.creator.authorHurum, Jørn Harald
cristin.unitcode185,28,8,2
cristin.unitnameNorsk senter for paleontologi
cristin.ispublishedtrue
cristin.fulltextoriginal
dc.identifier.cristin1639354
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Norwegian Journal of Geology&rft.volume=98&rft.spage=189&rft.date=2018
dc.identifier.jtitleNorwegian Journal of Geology
dc.identifier.volume98
dc.identifier.issue2
dc.identifier.startpage189
dc.identifier.endpage218
dc.identifier.doihttp://doi.org/10.17850/njg98-2-03
dc.identifier.urnURN:NBN:no-74219
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn0801-4736
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/71103/1/NJG_Vol98_Nr2_Bratvold.pdf
dc.type.versionPublishedVersion


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