Where: Alberta, Canada (49.4° N, 112.8° W: paleocoordinates 57.1° N, 78.4° W)
• coordinate stated in text
• local area-level geographic resolution
When: Bearpaw Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Bearpaw [Shale] Formation, which overlies the Late Campanian Oldman Formation (brackish to non-marine), andis overlain by the Eastend Fm (Maastrichtian). AGE: Late Campanian on the basis of ammonite (and other groups) biostratigraphy; Baculites compressus biozone. STRATIGRAPHIC POSITION: From uppermost Bearpaw Fm.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, gray shale and lithified, concretionary shale
Size class: macrofossils
Preservation: cast, mold/impression, original calcite
Collected by Russell & Landes in 1934-1936; reposited in the GSC
Collection methods: surface (in situ),
• COLLECTOR: L.S. Russell and R. W. Landes. REPOSITORY: Geological Survey of Canada (GSC)
Primary reference: L. S. Russell and R. W. Landes. 1937. Geology of the Southern Alberta Plains. Part II. Paleontology of the marine formations of the Montana Group. Geological Survey of Canada Memoir 221 [A. Hendy/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 82642: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Rhaeboceras whiteavesi Russell and Landes 1937 ammonite | |
Bivalvia | |
Pecten assiniboiensis scallop
Pecten nebrascensis scallop | |
Pholadomya sp. Sowerby 1823 clam | |
Arctica ovata clam |