Stricklandia-coral ass'n. of Solvik Fmn. in Oslo-Asker Districts (Silurian of Norway)

Where: Norway (59.9° N, 10.8° E: paleocoordinates 26.7° S, 8.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Solvik Formation, Rhuddanian (443.4 - 440.8 Ma)

• Collections assigned to this association occur in both Myren and Spirodden Members.

• formation-level stratigraphic resolution

Environment/lithology: marine; shale and mudstone

• "The vertical sequence of fossil associations can be related to a sequence of sedimentary facies all dominated by shales and mudstones belonging to an open shelf environment. The last phase of the Ordovician/Silurian glacio-eustatic transgression took place while the initial beds of the Solvik Formation were deposited, producing a deep shelf environment...These interpretations are mainly based on frequency, thickness and structures in storm-associated silt and fine sandstone interbeds which occur throughout the formation...The fossils...normally occur scattered all through the sediment and at variable angles to the bedding...Valves are most often disarticulated but fragmentation and orientation are seldom seen...I regard these assemblages as essentially untransported or `disturbed neighborhood assemblages' (Scott 1974) with the exception of some samples from the Leangen Member...[Transport is only local]."

Collection methods: Abundance data given by Baarli have not been entered.

Primary reference: B. G. Baarli. 1987. Benthic faunal associations in the Lower Silurian Solvik Formation of the Oslo-Asker Districts, Norway. Lethaia 20:75-90 [M. Foote/M. Foote/J. Ju]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 13844: authorized by Michael Foote, entered by Michael Foote on 29.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Chlorophyceae
 Dasycladales - Dasycladaceae
Cyclocrinites sp. Stolley 1898
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Strophomenata
 Strophomenida - Leptestiidae
Leangella scissa Davidson 1871
 Strophomenida - Sowerbyellidae
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata de Sowerby and Murchison 1839
 Strophomenida - Aegiromenidae
Rhynchonellata
 Atrypida -
Protatrypa malmoeyensis Boucot et al. 1964
 Atrypida - Lissatrypidae
 Orthida - Hesperorthidae
Dolerorthis plicata de Sowerby and Murchison 1839
 Orthida - Dalmanellidae
"Isorthis prima" = Levenea llandoveriana
"Isorthis prima" = Levenea llandoveriana Williams 1951
 Pentamerida - Clorindidae
"Clorinda undata" = Clorilamnulella undata
"Clorinda undata" = Clorilamnulella undata de Sowerby and Murchison 1839
 Pentamerida - Stricklandiidae
Stricklandia lens Sowerby 1839
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Includes globular, ramose, and stick-like forms.
Anthozoa
 Rugosa -
Rugosa indet. horn coral
 Heliolitida - Halysitidae
Halysitidae indet. Milne-Edwards and Haime 1849 tabulate coral
Halysites sp. von Waldheim 1813 tabulate coral
 Heliolitida - Heliolitidae
Heliolitidae indet. Lindström 1876 tabulate coral
Heliolites sp. Dana 1846 tabulate coral
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral