Marmierfjellet, Flowerdalen (Grippia niveau bonebed): Spathian, Svalbard and Jan Mayen
collected by Spitsbergen Mesozoic Research Group 2015

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Ichthyopterygia indet. (Owen 1840)
Ekeheien et al. 2018
Reptilia - Omphalosauridae
Omphalosaurus sp. Merriam 1906
Ekeheien et al. 2018
Chondrichthyes - Hybodontiformes
Hybodontoidea informal indet. cephalic spine Agassiz 1834
Hybodontoidea informal indet. fin spine Agassiz 1834
Lissodus angulatus (Stensiö 1921)
Chondrichthyes - Hybodontiformes - Polyacrodontidae
Polyacrodus sp. Jaekel 1889
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus rapax Stensiö 1921
Hybodus ? microdus Stensiö 1921
Hybodus sasseniensis Stensiö 1921
Chondrichthyes - Hybodontiformes - Acrodontidae
Acrodus sp. Agassiz 1834
Acrodus scaber Stensiö 1921
Acrodus spitzbergensis Hulke 1873
Acrodus gaillardoti Agassiz 1834
Acrodus oppenheimeri Stensiö 1921
Acrodus lateralis Agassiz 1839
Palaeobates polaris Stensiö 1921
Chondrichthyes - Synechodontiformes
Synechodontiformes informal indet. 1 Duffin and Ward 1993
Synechodontiformes informal indet. 2 Duffin and Ward 1993
Chondrichthyes - Synechodontiformes - Palaeospinacidae
Nemacanthus sp. Agassiz 1836
see common names

Geography
Country:Svalbard and Jan Mayen
Coordinates: 78.3° North, 16.6° East (view map)
Paleocoordinates:41.7° North, 8.8° East
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Triassic Epoch:Early/Lower Triassic
Stage:Olenekian 10 m.y. bin:Triassic 1
Key time interval:Spathian
Age range of interval:251.30000 - 247.20000 m.y. ago
Stratigraphy
Formation:Vikinghøgda Member:Vendomdalen
Stratigraphic resolution:bed
Stratigraphy comments: The thickness of the bed varies due to uneven compaction of the surrounding shale. The maximum thickness is about 5 cm but generally the deposit is thinner. The Bajarunia euomphala Zone and the Parasibirites grambergi Zone are equally likely whereas placement in the Keyserlingites subrobustus Zone is very unlikely though it cannot be completely excluded. The Bajarunia euomphala Zone is of early Spathian age while the Parasibirites grambergi Zone is of early to middle Spathian age.
Lithology and environment
Primary lithology:nodular lithified "shale"
Lithology description: Grey to black coloured shale matrix with yellow dolomite nodules, bones, teeth and coprolites scattered throughout.
Environment:offshore
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:Spitsbergen Mesozoic Research Group Collection dates:2015
Collection method comments: Repository: Natural History Museum, University of Oslo
Metadata
Database number:196857
Authorizer:M. Clapham, M. Uhen Enterer:M. Clapham, M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2018-10-10 23:15:55 Last modified:2020-10-01 14:16:23
Access level:the public Released:2018-10-10 23:15:55
Creative Commons license:CC BY
Reference information

Primary reference:

67045. J. Bratvold, L. L. Delsett, and J. H. Hurum. 2018. Chondrichthyans from the Grippia bonebed (Early Triassic) of Marmierfjellet, Spitsbergen. Norwegian Journal of Geology 98:189-217 [M. Clapham/M. Clapham]

Secondary references:

73953 C. P. Ekeheien, L. L. Delsett, A. J. Roberts and J. H. Hurum. 2018. Preliminary report on ichthyopterygian elements from the Early Triassic (Spathian) of Spitsbergen. Norwegian Journal of Geology 98(2):219-237 [M. Uhen/M. Uhen/M. Uhen]