Core 13/2-U-2, Unit D, level 32.91 - 32.92 (Silurian to of Norway)

Where: Norway (58.0° N, 8.4° E: paleocoordinates 28.4° S, 9.7° W)

• small collection-level geographic resolution

When: D Member, Rhuddanian to Rhuddanian (443.4 - 438.5 Ma)

• "Both the fossil content and the lithology are very similar to the age-equivalent Solvik Fm. of the Oslo region." "Both the macrofaunas and the microfossils definitely indicate an early Llandovery (Rhuddanian) age, possibly just extending into the succeeding Aeronian Stage."

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified shale and limestone

• Shale dominated unit, contains thin beds of limestone often enriched in fossil debris. Mostly planar lamination, occasional "ripple drift" lamination. Moderately deep shelf community.

Collection methods: core, mechanical,

Primary reference: M. Smelror, R. M. Cocks, A. Mork, B. E. E. Neuman, and H. A. Nakrem. 1997. Upper Ordovician - Lower Silurian strata and biota from offshore South Norway. Norsk Geologisk Tidsskrift 77:251-268 [J. Alroy/M. Sommers/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2874: authorized by John Alroy, entered by Mike Sommers on 21.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Some beds (unspecified which ones) of core contain crinoid debris, one contains numerous gastropods. In thin sections trilobite, ostracod, and bryozoan fragments are visible.
 Strophomenida - Rafinesquinidae
"Leptaena haverfortensis" = Leptaena (Leptaena) haverfordensis
"Leptaena haverfortensis" = Leptaena (Leptaena) haverfordensis Bancroft 1949
 Strophomenida - Leptostrophiidae
"Brachyprion compressa" = Palaeoleptostrophia compressa
"Brachyprion compressa" = Palaeoleptostrophia compressa de Sowerby and Murchison 1839