Ildjernet, the NW-ern end, 4aα - 4aβ transitional layers (Ordovician to of Norway)

Where: Oslo Asker, Norway (59.8° N, 10.6° E: paleocoordinates 32.6° S, 10.0° W)

• coordinate estimated from map

When: Uhaku to Uhaku (459.7 - 456.8 Ma)

• "from the transitional layers between zone 4aα - 4aβ", in Spjeldnaes (1957)

Environment/lithology: limestone

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 194770: authorized by Björn Kröger, entered by Björn Kröger on 29.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Trinucleida - Trinucleidae
 Asaphida - Asaphidae
Ogygiocaris dilatata Brünnich 1781 trilobite
Ogygiocaris dilatata sarsi
Strophomenata
 Strophomenida - Allwynellidae
Alwynella intermedia Spjeldnaes 1957