61q. Billings Butte, E of Robson Peak (Ordovician of Canada)

Also known as Mount Robson, Mount Lynx, Robson Park

Where: British Columbia, Canada (53.1° N, 119.1° W: paleocoordinates 0.8° S, 71.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Leiostegium-Kainella trilobite zone, Chushina Formation, Stairsian (485.4 - 478.6 Ma)

• "Leiostegium zone" (p. 61); "Cushina formation" (explanation of plate 15). The species Robsonoceras robsonense occuring at this locality is listed among taxa of Gasconadian age.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: original aragonite, replaced with calcite

Primary reference: C. D. Walcott. 1924. Cambrian and Ozarkian Brachiopoda, Ozarkian Cephalopods and Notostraca. Smithsonian Miscellaneous Collections 67:477-554 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88872: authorized by Björn Kröger, entered by Torsten Liebrecht on 23.04.2009, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
"? Endoceras monsensis" = Walcottoceras monsense, "Ellesmeroceras robsonensis n. sp." = Robsonoceras robsonense
"? Endoceras monsensis" = Walcottoceras monsense Walcott 1924
"Ellesmeroceras robsonensis n. sp." = Robsonoceras robsonense Walcott 1924
USNM 69803-69806, 109502