Where: Alberta, Canada (49.5° N, 110.3° W: paleocoordinates 56.9° N, 82.8° W)
• coordinate stated in text
• local area-level geographic resolution
When: Eastend Formation, Early/Lower Maastrichtian (70.6 - 66.0 Ma)
• STRATIGRAPHIC RELATIONS: From the Eastend Formation, which overlies the Late Campanian Bearpaw [Shale] Formation, and is overlain by the Whitemud Fm (Early Maastrichtian). AGE: Early Maastrichtian on the basis of ammonite (and other groups) biostratigraphy; Inoceramus fibrosus biozone. Early Maastrichtian according to Dawson et el. - Geological Atlas of the Western Canada Sedimentary Basin. STRATIGRAPHIC POSITION: From unknown position within formation.
• 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 82645: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Mactra warrenana" = Cymbophora warrenana
"Mactra warrenana" = Cymbophora warrenana Meek and Hayden 1856 clam | |
"Protocardia borealis" = Leptocardia borealis, Protocardia subquadrata
"Protocardia borealis" = Leptocardia borealis Whiteaves 1885 cockle
Protocardia subquadrata Evans and Shumard 1857 cockle | |
Panope mclearni Warren 1934 clam | |
Pholadomya cupressensis Russell and Landes 1937 clam | |
Pteria nebrascana Evans and Shumard 1857 scallop | |
Inoceramus sp. Sowerby 1814 clam
Inoceramus fibrosus Meek and Hayden 1857 clam | |
Yoldia cupressensis Russell and Landes 1937 clam | |
Nucula planimarginata Meek and Hayden 1857 nut clam |