Where: Alberta, Canada (51.5° N, 116.2° W: paleocoordinates 2.8° S, 75.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Bison Creek Formation, Sunwaptan (493.5 - 487.5 Ma)

• approximately 70m above the base of the Bison Creek Formation; most fossiliferous in unit

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified, calcareous shale and lithified, intraclastic, shelly/skeletal grainstone

Size class: macrofossils

Primary reference: S. R. Westrop. 1986. Trilobites of the Upper Cambrian Sunwaptan Stage, southern Canadian Rocky Mountains, Alberta. Palaeontographica Canadiana 3:1-179 [S. Peters/S. Peters/U. Merkel]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 54088: authorized by Shanan Peters, entered by Shanan Peters on 22.09.2005

Creative Commons license: CC BY (attribution)