Where: Alberta, Canada (49.1° N, 111.3° W: paleocoordinates 57.3° N, 76.4° W)
• coordinate stated in text
• local area-level geographic resolution
When: Bear Gulch Member (Pawkowki Formation), Early/Lower Campanian (83.5 - 70.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Bear Gulch Mbr of the Pawkowki Formation, which overlies the Early Campanian Milk River Formation, is equivalent to the Lea Park Fm, and is overlain by the Judith River Fm (Late Campanian). AGE: Early Campanian on the basis of ammonite (and other groups) biostratigraphy; Baculites obtusus biozone. Early Campanian according to Dawson et el. - Geological Atlas of the Western Canada Sedimentary Basin. STRATIGRAPHIC POSITION: From unknown part of the Bear Gulch Mbr.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified siliciclastic sediments
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 82651: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cephalopoda | |
Baculites asperiformis Meek 1876 ammonite | |
Gastropoda | |
Acirsa meeki wentletrap | |
Bivalvia | |
Nucula assiniboiensis Russell and Landes 1937 nut clam | |
Volsella wrighti Warren 1934 mussel | |
Pteria nebrascana Evans and Shumard 1857 scallop | |
Ostrea russelli Russell and Landes 1937 oyster
Ostrea albertensis Russell and Landes 1937 oyster | |
Tancredia americana Meek and Hayden 1857 clam | |
Corbula lacteaa clam |