GSC loc. 25281. mouth of Chasm Creek, Churchill River (Ordovician of Canada)

Also known as 16D

Where: Manitoba, Canada (58.0° N, 94.9° W: paleocoordinates 7.0° S, 51.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 1 Member (Caution Creek Formation), Richmondian (449.6 - 445.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: dolomitic, gray mudstone and shelly/skeletal packstone

• The formation is composed predominantly of light 12 grey, slightly dolomitic, micritic mudstones with interbeds of bioclastic packstone. Members 1 and 3 can be discriminated from Member 2 by their irregular bedding and rubbly- or nodular-weathering appearance. Member 1 is much more fossiliferous than the other two.

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: taxonomic analysis

PaleoDB collection 166633: 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 - Furcitellidae
Megamyonia nitens, Oepikina limbrata
Megamyonia nitens Billings 1860
Oepikina limbrata Wang 1949
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Hiscobeccus capax
Hiscobeccus capax Conrad 1842