Where: Oslo-Asker, Norway (59.9° N, 10.7° E)
• Paleocoordinates: 27.2° S, 69.1° W (Wright 2013)
• coordinate estimated from map
When: Diplograptus foliaceus graptolite zone, Arnestad Formation, Haljala to Haljala (456.8 - 452.8 Ma)
• "Lower Chasmops Shale 4bα ", in Nikolaisen (1961)= Arnestad
• formation-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 191108: authorized by Björn Kröger, entered by Björn Kröger on 10.01.2018
Creative Commons license: CC0 (CC0)
Taxonomic list
Artiopoda | |
"Atractopyge dentata" = Cybellela dentata
"Atractopyge dentata" = Cybellela dentata Esmark 1833 trilobite |