GSC loc. 25279. Around mouth of Surprise Creek (Ordovician of Canada)

Also known as 10O

Where: Manitoba, Canada (58.0° N, 95.0° 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)

• bed-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 166464: authorized by Pete Wagner, entered by Pete Wagner on 14.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Strophonellidae
"Strophomena semiovalis" = Eostrophonella semiovalis
"Strophomena semiovalis" = Eostrophonella semiovalis Shaler 1865
 Strophomenida - Furcitellidae
 Strophomenida - Strophomenidae
"Strophomena fluctuosa" = Nasutimena fluctuosa
"Strophomena fluctuosa" = Nasutimena fluctuosa Billings 1860
Rhynchonellata
 Orthida - Plaesiomyidae
Dinorthis occidentalis Okulitch 1943
 Rhynchonellida - Rhynchotrematidae