Gerronostroma concentricum Community, Bobrov Stage, W. Urals (Silurian of Russian Federation)

Also known as Reef 2411

Where: Russian Federation (56.3° N, 59.3° E: paleocoordinates 2.2° N, 12.1° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Pridoli (423.0 - 419.2 Ma)

• Bobrov Regional Stage, Pridolian

Environment/lithology: reef, buildup or bioherm; limestone

• "The unit is intimately associated laterally with, and perhaps partly in a vertical direction, with the Atrypoidea prunum gigas Comm., and is considered to be a quiet water, BA 2 unit."
• "Occurs on a siltstone (limestone and micrite) substrate as massive colonies aggregated into biostromes. Subcylindrical and columnal coeonstea occur betw. massive ones."

Primary reference: V. P. Sapelnikov, O. V. Bogoyavlenskaya, L. I. Mizens and V. P. Shuysky. 1999. Silurian and Early Devonian benthic communities of the Ural-Tien Shan region. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 510-544 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23722: authorized by Michael Foote, entered by Michael Foote on 19.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• The stromatoporoid-dominated communities are often associated with other faunal elements, but the lists given emphasize the dominant stromatoporoids.
Show authors, comments, and common names
Stromatoporoidea
 Clathrodictyida - Actinodictyidae
Plexodictyon vaigatschense
Plexodictyon vaigatschense stromatoporoid sponge
 Clathrodictyida - Gerronostromatidae
Gerronostroma concentricum
Gerronostroma concentricum stromatoporoid sponge
 Syringostromatida - Coenostromatidae
Parallelostroma tuberculatum
Parallelostroma tuberculatum stromatoporoid sponge
 Amphiporida - Amphiporidae
Clathrodictyella retroata
Clathrodictyella retroata stromatoporoid sponge