Slemmestad industrial area, S. postcurrens zone (Ordovician of Norway)

Where: Oslo Asker, Norway (59.8° N, 10.5° E: paleocoordinates 37.7° S, 15.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Sphaerophthalmus postcurrens trilobite zone, Alum Shale Formation, Tremadocian (485.4 - 477.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale and limestone

Size classes: macrofossils, mesofossils

Primary reference: M. Høyberget and D. L. Bruton. 2012. Revision of the trilobite genus Sphaerophthalmus and relatives from the Furongian (Cambrian) Alum Shale Formation, Oslo Region, Norway. Norwegian Journal of Geology 92:433-450 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190317: authorized by Björn Kröger, entered by Björn Kröger on 05.12.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Olenida - Olenidae
Sphaerophthalmus drytonensis Cobbold 1934 trilobite
Sphaerophthalmus postcurrens Westergard 1944 trilobite