Loc. 25, Milk River [Foremost Mbr, Judith River Fm] (Cretaceous of Canada)

Where: Alberta, Canada (49.1° N, 110.8° W: paleocoordinates 56.4° N, 76.3° W)

• coordinate stated in text

• local area-level geographic resolution

When: Foremost Formation (Belly River Group), Middle Campanian (83.5 - 70.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Foremost [Mbr] Fm, which overlies the Early Campanian Pakowki Fm, and is overlain by the Oldman [Mbr] Fm (non-marine) of the Judith River [Fm] Gp (Late Campanian). AGE: Late Campanian on the basis of ammonite (and other groups) biostratigraphy; Middle Campanian according to Dawson et el. - Geological Atlas of the Western Canada Sedimentary Basin. STRATIGRAPHIC POSITION: From unknown position within the Foremost Fm.

•Foremost Formation is likely middle Campanian in age, see Fowler et al. 2017 supplementary data for more details on age constraints of the Foremost Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified sandstone

• ENVIRONMENT: Very shallow siliciclastic marine setting.
• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: lithified.

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the GSC

Collection methods: surface (in situ),

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 82684: authorized by Austin Hendy, entered by Austin Hendy on 31.07.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculida - Nuculidae
Nucula assiniboiensis Russell and Landes 1937 nut clam
 Cardiida - Tancrediidae
Tancredia americana Meek and Hayden 1857 clam
 Cardiida - Mactridae
 Pholadida - Corbulidae
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite