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

Where: Norway (60.2° N, 10.3° E: paleocoordinates 23.3° S, 8.6° W)

• coordinate based on political unit

• local area-level geographic resolution

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

• Lower and middle parts of Bruflat Formation.

• 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: Table 22.1 gives summary of species present and abundances for five collections at Ringerike combined.

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 14265: 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.
 Rugosa -
Rugosa indet. horn coral
 Orthida - Dicoelosiidae
Dicoelosia alticavata Whittard and Barker 1950
 Orthida - Dalmanellidae
 Spiriferida - Cyrtiidae
"Cyrtia exporrecta" = Cyrtia exporrectus
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
species name in quotes
 Strophomenida -
 Strophomenida - Sowerbyellidae
 Strophomenida - Rafinesquinidae
Leptaena purpurea Cocks 1968
Trilobita indet. Walch 1771 trilobite
Illaenomorph trilobites