Walcott Loc. 63d. Ptarmigan Peak (Cambrian of Canada)

Where: Alberta, Canada (51.5° N, 116.1° W: paleocoordinates 3.9° S, 80.0° W)

When: Albertella trilobite zone, Ptarmigan Formation, Delamaran (511.2 - 506.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: argillaceous limestone

• dark, thin-bedded finely arenaceous limestone

Size class: macrofossils

Reposited in the USNM

Primary reference: C. D. Walcott. 1917. The Albertella fauna in British Columbia and Montana. Smithsonian Miscellaneous Collections 67(2):9-59 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 225274: authorized by Pete Wagner, entered by Pete Wagner on 01.05.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
  - Antagmidae
"? Ptychoparia cilles n. sp." = Periomma cilles
"? Ptychoparia cilles n. sp." = Periomma cilles Walcott 1917 trilobite
 Ptychopariida - Ptychopariidae
"Crepicephalus chares n. sp." = Kochiella chares
"Crepicephalus chares n. sp." = Kochiella chares Walcott 1917 trilobite