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A paradoxidid–agnostoid fauna from the mid-Cambrian (Stage 5) of the Caledonian Lower Allochthon on Tåsjöberget, Ångermanland, Sweden
Uppsala University, Music and Museums, Museum of Evolution.
2014 (English)In: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 136, no 4, 513-530 p.Article in journal (Refereed) Published
Abstract [en]

We describe faunas, formerly very little known, from allochthonous mid-Cambrian strata in the Fjallbranna Formation (Tasjon Group) in angstrom ngermanland that are equivalent to the "Paradoxides oelandicus Beds" of the autochthon. Paradoxidid trilobites are by far the commonest forms but are represented only by dissociated sclerites; 7-10 taxa appear to be present, but most of them are so incomplete that they cannot be identified with certainty. They are accompanied by rare agnostoids of two taxa, Pentagnostus praecurrens and Acadagnostus acadicus. The assemblages lack eodiscoid or other polymerid trilobites, molluscs and brachiopods, and in this respect contrast with shallower-water shelf faunas in the "Oelandicus Beds" of the Swedish autochthon, but bear comparison with shelf-edge or slope faunas from Novaya Zemlya (Arctic Russia), the Moesian Platform (Romania) and South Carolina (USA).

Place, publisher, year, edition, pages
2014. Vol. 136, no 4, 513-530 p.
Keyword [en]
Trilobites, Acadoparadoxides (Baltoparadoxides) oelandicus Superzone, Sweden, Caledonides, Lower Allochthon
National Category
Geology
Identifiers
URN: urn:nbn:se:uu:diva-240012DOI: 10.1080/11035897.2014.888471ISI: 000345381600001OAI: oai:DiVA.org:uu-240012DiVA: diva2:775890
Available from: 2015-01-05 Created: 2015-01-05 Last updated: 2017-12-05

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Rushton, Adrian W. A.Ebbestad, Jan Ove R.

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CiteExportLink to record
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  • apa
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