Where: Alberta, Canada (52.8° N, 110.9° W: paleocoordinates 59.9° N, 73.9° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Lea Park Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• STRATIGRAPHIC RELATIONS: The top of the unit is defined by an interfingering contact with the Judith River Formation. The bottom is the contact with the upper or First White Speckled Shale. In eastern Saskatchewan and southern Manitoba the Lea Park correlates with the Gammon Ferruginous, Pembina and lower Millwood members of the Pierre Shale. To the north the Labiche Formation of the Athabasca River region is partly equivalent. In the Peace River area the Puskwaskau Formation is of similar age to the lower Lea Park. In the north and central Alberta Foothills the Nomad, Chungo and Hanson members of the Wapiabi Formation are considered equivalent. In southern Alberta the Belly River, Pakowki and Milk River formations and in northern Montana their stratigraphic equivalents the Judith River, Claggett and Eagle formations are of similar age to the Lea Park. AGE: Campanian, on the basis of ammonoid biostratigraphy; Scaphites ventricosus zone. STRATIGRAPHIC POSITION: List representing lower part of formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, gray, silty shale

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the GSC

Collection methods: surface (in situ),

• COLLECTOR: Multiple collectors. REPOSITORY: Geological Survey of Canada (GSC).

Primary reference: P. S. Warren. 1935. The fauna of the Lea Park Shale. Transactions of the Royal Canadian Institute 20(11):223-229 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87439: authorized by Austin Hendy, entered by Austin Hendy on 17.03.2009

Creative Commons license: CC BY (attribution)