W4d, 5 m above base Ross Lake Section Unit 5. 0.2 M NE of upper end of Ross Lake (Cambrian of Canada)

Also known as Yoho National Park

Where: British Columbia, Canada (52.8° N, 119.3° W: paleocoordinates 1.9° S, 77.8° W)

• coordinate based on political unit

When: Mount Whyte Formation, Solvan (513.0 - 501.0 Ma)

• Delamaran on N. American scale

Environment/lithology: marine; lithified, gray limestone

• "135 ft. of siliceous, fissile, dark grey shale, outer detrital belt, geosynclinal (pre-orogenic) BA4?"
• dark gray crystalline limestone

Primary reference: G. Geyer. 1994. Middle Cambrian mollusks from Idaho and early conchiferan evolution. New York State Museum Bulletin 481(1):69-86 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50545: authorized by Pete Wagner, entered by Pete Wagner on 17.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• "C Deiss 1939. Cambrian formations of southwestern Alberta and southeastern British Columbia. GSA Bull. 50:951-1026."
Tergomya
 Tryblidiida - Protoconchoididae
? Protoconchioides rasettii n. sp. Geyer 1994
Scenella sp. of earlier lists