Where: Oslo Asker, Norway (59.9° N, 10.7° E: paleocoordinates 32.6° S, 9.9° W)

• coordinate estimated from map

When: Arnestad Formation, Keila (453.9 - 453.0 Ma)

• " top of 4bα", in Henningsmoen 1960

Environment/lithology: shale

Size classes: macrofossils, mesofossils

Primary reference: G. Henningsmoen. 1960. The Middle Ordovician of the Oslo Region, Norway 13. Trilobites of the Family Asaphidae. Norsk Geologisk Tidsskrift 40:203-257 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 193480: authorized by Björn Kröger, entered by Björn Kröger on 22.05.2018

Creative Commons license: CC BY (attribution)