A0422 (= A1244) Bluffs on east side of Riviere Becscie: Rhuddanian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Pentamerida - Virgianidae
Virgiana barrandei (Billings 1857)
see common names

Geography
Country:Canada State/province:Quebec County:Anticosti
Coordinates: 49.7° North, 64.1° West (view map)
Paleocoordinates:20.6° South, 89.6° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Silurian Epoch: Llandovery
Stage: Rhuddanian 10 m.y. bin: Silurian 1
Key time interval: Rhuddanian
Age range of interval: 443.8 - 440.8 m.y. ago
Stratigraphy
Formation:Becscie Member:Chabot
Stratigraphic resolution:member
Lithology and environment
Primary lithology: lithified packstone
Lithology description: The Chabot Member contains abundant, more thickly and massively bedded, biogenic grainstones and in part intraformational conglomerates, also of inner to mid shelf origin, but with a richer and more diverse tabulate- rugose coral and stromatoporoid fauna, forming biostromes or thickets in places. The large shells of Virgiana barrandei are the predominant pentamerid in the upper Chabot Member, commonly preserved as shell beds or packstones of broken or disarticulated shells, although complete in situ shells are known from some localities. Other brachiopods include common Mendacella, but brachiopod diversity is lower here than the unit below.
Environment:open shallow subtidal
Geology comments: Sami and Desrochers (1992) indicate that this sequence is strongly storm-disturbed, and above fairweather wave base, with abundant tempestites intercalated between micritic mudstone and wackestone beds.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:peel or thin section,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:163504
Authorizer:P. Wagner Enterer:P. Wagner
Research group:marine invertebrate
Created:2014-11-03 06:58:37 Last modified:2025-02-22 15:12:02
Access level:the public Released:2014-11-03 06:58:37
Creative Commons license:CC0
Reference information

Primary reference:
53345. J. Jin and P. Copper. 2000. Late Ordovician and Early Silurian pentamerid brachiopods from Anticosti Island, Québec, Canada. Palaeontographica Canadiana 18:1-140 [P. Wagner/P. Wagner]