Stricklandia-Cryptothyrella ass'n. of Solvik Fmn. in Oslo-Asker Districts: Aeronian, Norway

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chlorophyceae - Dasycladales - Dasycladaceae
Cyclocrinites sp. Stolley 1898
55 specimens
Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
598 specimens
unclassified
Bryozoa indet. Ehrenberg 1831
299 specimens
Strophomenata - Strophomenida - Leptestiidae
Leangella scissa (Davidson 1871)
11 specimens
Strophomenata - Strophomenida - Sowerbyellidae
Eoplectodonta duplicata (de Sowerby and Murchison 1839)
22 specimens
Strophomenata - Strophomenida - Leptostrophiidae
Eostropheodonta sp. Bancroft 1949
15 specimens
Rhynchonellata - Atrypida
Protatrypa malmoeyensis Boucot et al. 1964
182 specimens
Rhynchonellata - Athyridida - Meristellidae
Cryptothyrella sp. Cooper 1942
86 specimens
Rhynchonellata - Orthida - Draboviidae
? Hirnantia sp. Lamont 1935
50 specimens
Rhynchonellata - Orthida - Rhipidomellidae
Mendacella sp. Cooper 1930
47 specimens
Rhynchonellata - Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
49 specimens
Rhynchonellata - Pentamerida - Stricklandiidae
Stricklandia lens (Sowerby 1839)
331 specimens
Bivalvia
Bivalvia indet. Linnaeus 1758
12 specimens
Trilobita
Trilobita indet. Walch 1771
14 specimens
Ostracoda
Ostracoda indet. Latreille 1802
51 specimens
Anthozoa - Favositida - Favositidae
Favositidae indet. Dana 1846
15 specimens
Anthozoa - Rugosa
Rugosa indet. Milne-Edwards and Haime 1850
77 specimens
see common names

Geography
Country:Norway
Coordinates: 59.9° North, 10.8° East (view map)
Paleocoordinates:25.7° South, 8.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Silurian Epoch: Llandovery
Stage: Aeronian 10 m.y. bin: Silurian 1
Key time interval: Aeronian
Age range of interval: 440.8 - 438.5 m.y. ago
Stratigraphy
Formation:Solvik Member:Leangen
Stratigraphic resolution:member
Lithology and environment
Primary lithology: "shale"
Secondary lithology: mudstone
Lithology description: "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]."
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collection method comments: Abundance data given by Baarli have not been entered.
Metadata
Database number:13848
Authorizer:M. Foote, L. Ivany Enterer:M. Foote, C. Story
Modifier:M. Foote Research group:marine invertebrate
Created:2002-04-29 19:37:36 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-04-29 19:37:36
Creative Commons license:CC BY
Reference information

Primary reference:
6160. 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]