Crinoid ossicles from Mariaholmen (Triassic to of Norway)

Where: Svalbard, Norway (77.7° N, 14.9° E: paleocoordinates 41.0° N, 9.4° E)

• coordinate stated in text

• local area-level geographic resolution

When: Vardebukta and Tillingodden Formation, Induan to Induan (252.2 - 247.2 Ma)

Environment/lithology: shallow subtidal; packstone

• About 90 meters of the lowermost part of the Vardebukta Formation is covered by Quaternary deposits. The upper part of the Vardebukta Formation consists of shallow−marine (including pro−delta) sediments. The overlying Tvillingodden Formation is characterized by a transgressive system tract in the lower part and a regressive system tract in the upper part. Abundant silicified crinoid ossicles were recovered from eight samples taken from a highly fossiliferous limestone (the Skilisen Bed).

Size class: mesofossils

Preservation: original calcite, replaced with silica

Primary reference: M. A. Salamon, P. Gorzelak, N. M. Hanken, H. E. Riise, and B. Ferré. 2015. Crinoids from Svalbard in the aftermath of the end−Permian mass extinction. Polish Polar Research: The Journal of Committee on Polar Research of Polish Academy of Sciences 36(3):225-238 [V. Syverson/V. Syverson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 181724: authorized by Val Syverson, entered by Val Syverson on 29.09.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

 Holocrinida - Holocrinidae
Holocrinus sp. Wachsmuth and Springer 1886 Sea lily
 Articulata -
Encrinida indet. Matsumoto 1929 Sea lily
Roveacrinida indet. Sieverts-Doreck Sea lily
 Roveacrinida - Saccocomidae
Saccocoma quenstedti Sieverts-Doreck and Hess 2002 Sea lily
 Roveacrinida - Somphocrinidae
Osteocrinus sp. Kristan-Tollmann 1970 Sea lily
Somphocrinus sp. Peck 1943 Sea lily