Where: Oslo, Norway (60.0° N, 10.8° E: paleocoordinates 34.0° S, 10.7° W)

• outcrop-level geographic resolution

When: Helskjer Member (Elnes Formation), Darriwilian (467.3 - 458.4 Ma)

• 4aα on old scales

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Primary reference: E. L. Yochelson. 1963. The Middle Ordovician of the Oslo Region, Norway. 15. Monoplacophora and Gastropoda. Norsk Geologisk Tidsskrift 43(2):133-213 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 155395: authorized by Pete Wagner, entered by Pete Wagner on 10.04.2014

Creative Commons license: CC BY (attribution)