New late Smithian (Early Triassic) ammonoids from the Lusitandiadalan Member, Vikinghøgda Formation, Svalbard.

13 pages International audience A single carbonate concretion from the uppermost Lusitaniadalen Member (‘Fish Niveau’, Vikinghøgda Formation) at Stensiöfjellet, Spitsbergen,contains a fairly rich assemblage of late Smithian (Early Triassic, Olenekian) ammonoids. The main species identified are Wasat...

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Bibliographic Details
Published in:Norwegian Journal of Geology
Main Authors: Piazza, Veronica, Hammer, Øyvind, Jattiot, Romain
Other Authors: Museum für Naturkunde Berlin, Natural History Museum Oslo, University of Oslo (UiO), Paläontologisches Institut und Museum, Universität Zürich Zürich = University of Zurich (UZH), Biogéosciences UMR 6282 (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2017
Subjects:
Ammonoid biostratigraphy
Tardus Zone
Smithian
Prionitidae
Svalbard
Boreal Realm
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Lusitaniadalen
Stensiöfjellet
Vikinghøgda
Spitsbergen
Online Access:https://hal.science/hal-01660564
https://doi.org/10.17850/njg97-2-03
Description
Summary:13 pages International audience A single carbonate concretion from the uppermost Lusitaniadalen Member (‘Fish Niveau’, Vikinghøgda Formation) at Stensiöfjellet, Spitsbergen,contains a fairly rich assemblage of late Smithian (Early Triassic, Olenekian) ammonoids. The main species identified are Wasatchites tridentinusSpath, 1934, Wasatchites cf. distractus (Waagen, 1895), Anasibirites kingianus (Waagen, 1895), Arctoprionites nodosus (Frebold, 1930),Arctoprionites resseri (Mathews, 1929) and Xenoceltites subevolutus Spath, 1930. Two taxa are here discussed: Prionitid sp. and Arctoceraserebori sp. nov. The assemblage provides new information about the Early Triassic biostratigraphy and palaeogeography of the Boreal Realm. Thecomposition of the Spitsbergen fauna is in good agreement with other assemblages within and outside the Boreal Realm and essentially comprisescosmopolitan taxa. Only Arctoceras erebori sp. nov. and Prionitid sp. are as yet restricted to Spitsbergen. The newly reported occurrence of lowpaleolatitude taxa from Spitsbergen strengthens the cosmopolitan distribution of ammonoids during late Smithian time, thus improving existingcorrelation.

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