Røysetangen, Gagnum Member (Ordovician of Norway)

Where: Ringerike, Norway (60.1° N, 10.2° E: paleocoordinates 29.5° S, 9.4° W)

• coordinate estimated from map

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

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

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 41:279-310 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191122: authorized by Björn Kröger, entered by Björn Kröger on 10.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Encrinuridae
Atractopyge brevicauda Angelin 1854 trilobite
Atractopyge dentata Esmark 1833 trilobite