Semsvannet, Lower Chasmops shale (Ordovician to of Norway)

Where: Norway (59.9° N, 10.4° E: paleocoordinates 31.8° S, 9.8° W)

• coordinate estimated from map

When: Diplograptus foliaceus graptolite zone, Arnestad Formation, Haljala to Haljala (456.8 - 453.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale

Size classes: macrofossils, mesofossils

Primary reference: R. M. Owens. 1978. The trilobite genera Panarchaeogonus Opik, Isbergia Warburg and Cyamops gen. nov. from the Ordovician of Balto-Scandia and the British Isles. Norsk Geologisk Tidsskrift 58:199-219 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162245: authorized by Björn Kröger, entered by Björn Kröger on 21.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Scharyiidae
Panarchaeogonus phlyzacius Owens 1978 trilobite
5 specimen
 Phacopida - Calymenidae
Pharostoma nieszkowskii Schmidt 1894 trilobite