Treskelen, Tirolarpasset Member (Jurassic to of Svalbard and Jan Mayen)

Where: Svalbard and Jan Mayen (77.1° N, 16.2° E: paleocoordinates 68.3° N, 16.8° E)

• coordinate stated in text

When: Tirolarpasset Member (Janusfjellet Formation), Tithonian to Tithonian (152.1 - 139.8 Ma)

• They use a circular argument to further divide this fauna into Jurassic ammonite zones, but all the fauna comes from the same bed so I have listed it as one collection

Environment/lithology: offshore; argillaceous ironstone

• clay-ironstone concretions within shale

Size class: macrofossils

Primary reference: K. Birkenmajer and H. Pugaczewska. 1975. Jurassic and lower Cretaceous marine fauna of SW Torell Land, Spitsbergen. Studia Geologica Polonica XLIV:45-88 [W. Foster/W. Foster]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 212481: authorized by William Foster, entered by William Foster on 15.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Buchiidae