Loc. 34, Medicine Lodge Coulee [Eastend Fm] (Cretaceous of Canada)

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

• ENVIRONMENT: Offshore siliciclastic marine setting.
• SPECIFIC LITHOLOGY: Not stated in text, but certainly siliciclastic, probably shale. LITHIFICATION: Poorly-lithified.

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 82644: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropoda, scaphopoda, and cephalopoda.
unclassified
  -
Bivalvia
 Myalinida - Inoceramidae
Inoceramus fibrosus Meek and Hayden 1857 clam
 Pectinida - Oxytomidae
Pteria nebrascana Evans and Shumard 1857 scallop
 Pholadida - Corbulidae
Corbula sp. Bruguière 1789 clam
Corbula sprouli Warren 1934 clam
 Cardiida - Mactridae
 Cardiida - Tellinidae
Tellina cupressensis Russell and Landes 1937 tellin clam
 Cardiida - Tancrediidae
Tancredia americana Meek and Hayden 1857 clam
SUBSPECIES: T. americana cupressensis
 Cardiida - Cardiidae
Protocardia subquadrata Evans and Shumard 1857 cockle
 Nuculida - Nuculidae
Nucula planimarginata Meek and Hayden 1857 nut clam
 Protobranchia - Yoldiidae
Yoldia cupressensis Russell and Landes 1937 clam
Cephalopoda
 Ammonitida - Scaphitidae