southern end of Nakkholmen, uppermost 4bα (Ordovician of Norway)

Where: Oslo, Norway (59.9° N, 10.7° E: paleocoordinates 32.6° S, 10.0° W)

• coordinate estimated from map

When: Arnestad Formation, Keila (453.9 - 453.0 Ma)

• "from the uppermost part (4-5 m) of zone 4bα", in Spjeldnaes (1957)

• formation-level stratigraphic resolution

Environment/lithology: shale

Size classes: macrofossils, mesofossils

Primary reference: N. Spjeldnaes. 1957. The Middle Ordovician of the Oslo Region, Norway. 8. Brachiopods of the Suborder Strophomenida. Norsk Geologisk Tidsskrift 37(1):1-214 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194773: authorized by Björn Kröger, entered by Björn Kröger on 29.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Sowerbyellidae