Toyen Fm., Slemmestad Mbr., Oslo region, Norway (Ordovician of Norway)

Where: Norway (60.0° N, 11.0° E: paleocoordinates 36.3° S, 12.5° W)

• local area-level geographic resolution

When: Slemmestad Member (Toyen Formation), Arenig (478.6 - 466.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: submarine fan; lithified, gray, silty shale

• changed from "shale + shale" to "shale" by JA
• grey silty shale intercalated with thin dark shale

Primary reference: B. D. Erdtmann. 1965. Outline stratigraphy of graptolite-bearing 3B (Lower Ordovician) strata in the Oslo region, Norway. Norsk Geologiske Tidsskrift 45:481-547 [A. Miller/P. Novack-Gottshall/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3181: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 27.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Graptolite biostratigraphy
Show authors, comments, and common names
Pterobranchia
  -
Trigonograptus sp.
Trigonograptus sp. Lapworth 1873 graptolite
 Graptoloidea - Retiolitidae
Glyptograptus sp.
Glyptograptus sp. Lapworth 1873 graptolite
 Graptoloidea - Glossograptidae
Glossograptus sp.
 Graptoloidea - Isograptidae
Isograptus sp.
Isograptus sp. Moberg 1892 graptolite
 Graptoloidea - Dichograptidae
Schizograptus sp., Dichograptus sp., Didymograptus sp.
Dichograptus sp. graptolite
Didymograptus sp. McCoy 1851 graptolite
 Graptoloidea - Phyllograptidae
Phyllograptus sp., ? Tetragraptus sp.
Phyllograptus sp. Hall 1858 graptolite
? Tetragraptus sp. Salter 1863 graptolite
originally entered as "Tetragraptus? sp."