Quarry 2.2 km north of the Ouiatchouaniche River, Roberval (Ordovician of Canada)

Where: Quebec, Canada (48.5° N, 72.2° W: paleocoordinates 23.9° S, 48.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Unit 1 Member (Shipshaw Formation), Edenian (451.0 - 450.2 Ma)

• member-level stratigraphic resolution

Environment/lithology: shale and wackestone

• This unit is a succession of shale and interbedded wackestone, packstone, and grainstone that is up to 15 m in thickness

Size class: macrofossils

Reposited in the GSC

Primary reference: P. J. Lespérance and D. Desbiens. 1995. Selected Ordovician trilobites from the Lake St. John District of Quebec and their bearing on systematics. Paleontological Society Memoir 42:1-19 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 163862: authorized by Pete Wagner, entered by Pete Wagner on 18.11.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Cheiruridae
Ceraurus matranseris Sinclair 1947 trilobite
 Asaphida - Remopleurididae
Hypodicranotus striatulus Walcott 1875 trilobite