GSC loc. 25288. Right bank of Churchill River about 7.2 km above Red Head Rapids (Ordovician of Canada)

Also known as 19D

Where: Manitoba, Canada (58.1° N, 94.7° W: paleocoordinates 7.0° S, 50.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 2 Member (Chasm Creek Formation), Richmondian (449.6 - 445.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: dolomitic, gray limestone

• Environmental call by T. Hanson.
• "[L]ow rubbly outcrops. . . . Lithologically it is similar to Member No. 1 but is less resistant and tends to be lighter-colored both on weathered and fresh surfaces. Typically it is a light-gray-weathering, light-gray, crypto- to microcrystalline, dolomitic to slightly dolomitic limestone containing a fair amount of finely fragmented organic detritus, and estimated to be about 100 feet thick.

Size class: macrofossils

Reposited in the GSC

Primary reference: J. Jin, W. G. E. Caldwell, and B. S. Norford. 1997. Late Ordovician brachiopods and biostratigraphy of the Hudson Bay Lowlands, northern Manitoba and Ontario. Bulletin of the Geological Survey of Canada 513:1-115 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 166642: authorized by Pete Wagner, entered by Pete Wagner on 21.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena richmondensis