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

Also known as 16H

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: 3 Member (Chasm Creek Formation), Richmondian (449.5 - 443.7 Ma)

• group of beds-level stratigraphic resolution

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

• "At least 55 feet thick . . . consists of very resistant, light-yellowish-gray to buff, microcrystalline, iron-rich, in many places fucoidal, dolomitic to slightly dolomitic limestone, in massive beds weathering yellow and orange. Organic detritus is rather sparse and finely fragmented."

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 166637: authorized by Pete Wagner, entered by Pete Wagner on 21.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Orthida - Platyorthidae
Diceromyonia storeya Okulitch 1943