Where: Oslo, Norway (60.0° N, 10.7° E: paleocoordinates 30.4° S, 9.3° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Kalvsjøen Formation, Rawtheyan (448.8 - 445.2 Ma)

• Tretaspis = 5a, just above Armenoceras beds

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Primary reference: R. M. Owens. 1973. Ordovician Proetidae (Trilobita) from Scandinavia. Norsk Geologisk Tidsskrift 53:117-181 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 73491: authorized by Pete Wagner, entered by Pete Wagner on 18.06.2007

Creative Commons license: CC BY (attribution)