Gjettum, Bærum (Silurian of Norway)

Where: Norway (59.9° N, 10.5° E: paleocoordinates 21.2° S, 7.9° W)

When: Sjørvoll Member (Steinsfjorden Formation), Sheinwoodian (433.4 - 430.5 Ma)

• Transition between the old stages 9b and 9c, now assigned to the Wenlock Sjørvoll Member of the Steinsfjorden Formation

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified, stromatolitic, intraclastic, argillaceous limestone

• Grey slaty limestones interbedded with layers of dolomitic limestone. Mudflake conglomerates, desiccation cracks and algal laminations are common in the beds.

Size class: macrofossils

Collected by G. Henningsmoen in 1953,1959

• Repository: Paleontologisk Museum, Oslo (PMO)

Primary reference: O. E. Tetlie. 2002. A new Baltoeurypterus (Eurypterida: Chelicerata) from the Wenlock of Norway. Norwegian Journal of Geology 82:37-44 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184696: authorized by Matthew Clapham, entered by Matthew Clapham on 19.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Xiphosura
 Xiphosurida - Eurypteridae
"Baltoeurypterus henningsmoeni n. sp." = Eurypterus henningsmoeni
"Baltoeurypterus henningsmoeni n. sp." = Eurypterus henningsmoeni Tetlie 2002 eurypterid
 Xiphosurida - Pterygotidae
Pterygotidae indet. Clarke and Ruedemann 1912 eurypterid