C15n. Bow Lake. Bed 5. Shale beds (Cambrian of Canada)

Where: Alberta, Canada (51.7° N, 116.5° W: paleocoordinates 3.7° S, 79.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Albertella trilobite zone, Ross Lake Member (Cathedral Formation), Delamaran (511.2 - 506.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, fine-grained, gray, blue, cherty/siliceous shale and lithified limestone

• Shale: siliceous, fine-grained, blue-gray, fissile, with one or two beds of gray, crystalline limestone 1

Size class: macrofossils

Primary reference: F. Rasetti. 1951. Middle Cambrian stratigraphy and faunas of the Canadian Rocky Mountains. Smithsonian Miscellaneous Collections 116(5):1-277 [M. Uhen/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225276: authorized by Pete Wagner, entered by Pete Wagner on 01.05.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Corynexochida - Zacanthoididae
Vanuxemella nortia, Albertella microps, Albertella nitida, "Albertella bosworthi" = Paralbertella bosworthi
Albertella nitida Resser 1936 trilobite
"Albertella bosworthi" = Paralbertella bosworthi Walcott 1908 trilobite
 Corynexochida - Dolichometopidae
Ptarmigania rossensis
 Ptychopariida -
Kochina americana, Mexicella stator
Kochina americana Walcott 1912 trilobite
Mexicella stator Walcott 1916 trilobite