Also known as Nakholmen

Where: Oslo, Norway (59.9° N, 10.7° E: paleocoordinates 29.3° S, 9.0° W)

• coordinate estimated from map

When: Skjaerholmen Formation, Pirgu (449.5 - 445.2 Ma)

• "black shale, possibly the Trinucleus shale (4 c)", in Strand (1934)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale

Size classes: macrofossils, mesofossils

Primary reference: T. Strand. 1934. The Upper Ordovician Cephalopods of the Oslo Area. Norsk geologiske Tidsskrift 14:1-117 [B. Kröger/B. Kröger/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 164209: authorized by Björn Kröger, entered by Björn Kröger on 26.11.2014

Creative Commons license: CC BY (attribution)