Trilobite Bed, first gully north, Mount Stephen (Cambrian of Canada)

Where: British Columbia, Canada (51.4° N, 116.4° W: paleocoordinates 3.7° S, 80.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bathyuriscus-Elrathina trilobite zone, Campsite Cliff Shale Member (Burgess Shale Formation), Delamaran (513.0 - 505.0 Ma)

• Pagetia bootes subzone, trilobite bed

• bed-level stratigraphic resolution

Environment/lithology: deep-water; lithified shale

Size class: macrofossils

Preservation: mold/impression

Primary reference: J. K. Rigby and D. Collins. 2004. Sponges of the Middle Cambrian Burgess Shale and Stephen Formations, British Columbia. Royal Ontario Museum Contributions in Science 1:1-155 [W. Kiessling/U. Merkel/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121958: authorized by Wolfgang Kiessling, entered by Uta Merkel on 12.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Protomonaxonida - Piraniidae
Pirania muricata Walcott 1920 demosponge
 Protomonaxonida - Ulospongiellidae
Ulospongiella ancyla Rigby and Collins 2004 demosponge
 Octactinellida - Eiffeliidae
Petaloptyon danei Raymond 1931