Shipshaw River 50m - 200m downstream from the dam at Chute aux Galets (Ordovician of Canada)

Where: Quebec, Canada (48.7° N, 71.2° W: paleocoordinates 24.1° S, 47.6° 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 163866: 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
 Phacopida - Encrinuridae
Erratencrinurus spicatus, "Walencrinuroides gelaisi" = Encrinuroides gelaisi
Erratencrinurus spicatus Tripp 1974 trilobite
Erratencrinurus s.l. spicatus
"Walencrinuroides gelaisi" = Encrinuroides gelaisi Lespérance and Desbiens 1995 trilobite
Walencrinuroides s.l. gelaisi