GSC loc. 25272. Bad Cache Rapids, right bank of Churchill River. (Ordovician of Canada)

Also known as 3U

Where: Manitoba, Canada (58.0° N, 95.1° W: paleocoordinates 7.6° S, 52.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 2 Member (Portage Chute Formation), Maysvillian (450.2 - 449.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: dolomitic, gray limestone

• "Gray- to buff-weathering, light-gray, microcrystalline, slightly dolomitic limestone in beds 1 inch to 2 feet thick. Fragmental organic material is common. Closely-spaced, rusty-weathering, anastamosing laminae within the limestone are characteristic and in many places give the member a nodular appearance upon weathering."

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 166451: authorized by Pete Wagner, entered by Pete Wagner on 13.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Strophomenidae
Tetraphalerella churchillensis, Strophomena occidentalis
 Strophomenida - Furcitellidae
Megamyonia nitens
Megamyonia nitens Billings 1860
 Strophomenida - Sowerbyellidae
"Thaerodonta clarksvillensis" = Eochonetes clarksvillensis
"Thaerodonta clarksvillensis" = Eochonetes clarksvillensis Foerste 1912