Bjørkåsholmen, Slemmestad (Ordovician to of Norway)

Where: Oslo-Asker, Norway (59.8° N, 10.5° E: paleocoordinates 37.1° S, 14.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Megistaspis (Paramegistaspis) planilimbata trilobite zone, Hagastrand Member (Tøyen Formation), Tremadocian to Tremadocian (485.4 - 470.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

Size classes: macrofossils, mesofossils

Primary reference: O. A. Hoel. 1999. Trilobites of the Hagastrand Member (Tøyen Formation, lowermost Arenig) from tbe Oslo Region, Norway, Part Il : Remaining non-asaphid groups. Norsk Geologisk Tidsskrift 79:259-280 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190979: authorized by Björn Kröger, entered by Björn Kröger on 02.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
 Asaphida - Nileidae
Symphysurus angustatus Sars and Boeck 1838 trilobite