A0291 Coastal bluff section at second large point west of La Petite Riviere (Silurian of Canada)

Where: Quebec, Canada (49.1° N, 61.8° W)

• Paleocoordinates: 21.2° S, 87.9° W (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Chabot Member (Becscie Formation), Rhuddanian (443.4 - 440.8 Ma)

• Lower part of member.

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified packstone

• 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.
• 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.

Size classes: macrofossils, mesofossils

Preservation: original calcite

Collected by P. Copper

Collection methods: bulk,

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 158508: authorized by Seth Finnegan, entered by Seth Finnegan on 21.07.2014

Creative Commons license: CC0 (CC0)

Taxonomic list

• Brachiopods only.
Show authors, comments, and common names
Rhynchonellata
 Pentamerida - Virgianidae
Virgiana barrandei
Virgiana barrandei Billings 1857