Where: Hadeland, Norway (60.7° N, 11.0° E: paleocoordinates 28.9° S, 9.0° W)

• coordinate estimated from map

When: Gagnum Member (Lunner Formation), Katian (453.0 - 445.2 Ma)

• "Gagnum Shale 4bδ", in Nikolaisen (1961) = Gagnum Member

• member-level stratigraphic resolution

Environment/lithology: marine; shale

Size classes: macrofossils, mesofossils

Primary reference: F. Nikolaisen. 1961. The Middle Ordovician of the Oslo Region, Norway 7. Trilobites of the suborder Cheirurina. Norsk Geologisk Tidsskrift 41(2-4):279-310 [B. Kröger/B. Kröger/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191121: authorized by Björn Kröger, entered by Björn Kröger on 10.01.2018

Creative Commons license: CC BY (attribution)