Atrypa 'reticularis'-Dicoelosia alticavata Community at Malmoykalven (Silurian of Norway)

Where: Norway (59.9° N, 10.8° E: paleocoordinates 23.5° S, 8.2° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Vik Formation, Telychian (438.5 - 433.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lime mudstone and shale

• "This comm. is succeeded by a comm. of the Stricklandiidae Comm. Grp. in an upwardly shallowing sequence. It probably belongs to BA 5 and the outer part of BA 4."
• "Baarli (1990b) has described the environment for this community as characterized by a very soft bottom. It is found in both very limy and in more pure siliciclastic shale..."

Collection methods: Lists from 10 m and 32 m above base of Vik Formation (table 22.1) and from text. Table 22.1 gives absolute specimen counts.

Primary reference: B. G. Baarli, H. B. Keilen, and M. E. Johnson. 1999. Silurian communities of the Oslo Region, Norway. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 327-349 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14264: authorized by Michael Foote, entered by Michael Foote on 29.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Not all higher taxa listed at genus level.
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
Illaenomorph trilobites
Rhynchonellata
 Orthida - Dicoelosiidae
Dicoelosia alticavata Whittard and Barker 1950
 Orthida - Dalmanellidae
 Orthida - Hesperorthidae
Dolerorthis sp. Schuchert and Cooper 1931
 Pentamerida - Clorindidae
Clorinda sp. Barrande 1879
may substitute for Dicoelosia alticavata
 Spiriferida - Cyrtiidae
Eospirifer sp., "Cyrtia exporrecta" = Cyrtia exporrectus
Eospirifer sp. Schuchert 1913
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818
 Protorthida - Skenidiidae
Skenidioides sp. Schuchert and Cooper 1931
 Atrypida - Glassiidae
Glassia sp. Davidson 1881
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
species name in quotes
Strophomenata
 Strophomenida -
 Strophomenida - Leptestiidae
Leangella sp. Opik 1933
 Strophomenida - Sowerbyellidae
 Strophomenida - Rafinesquinidae
Leptaena purpurea Cocks 1968
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Graptolithina
  -
Anthozoa
 Rugosa -
Rugosa indet. horn coral