Waipiabi Fm (upper) (Cretaceous of Canada)

Where: Alberta, Canada (52.8° N, 116.9° W: paleocoordinates 61.0° N, 79.9° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Wapiabi Formation (Alberta Group), Campanian (83.6 - 72.1 Ma)

• STRATIGRAPHIC RELATIONS: From the Waipiabi Fm of the Alberta Gp. Overlies the Cardium Formation conformably or with only slight disconformity. The upper beds are gradational into the overlying Belly River Formation in the south and the Brazeau Formation in the central foothills. The unit passes eastward into shales of the upper Colorado Group and Lea Park Formation, to the north into the Puskwaskau, Bad Heart and Muskiki formations. AGE: Campanian, on the basis of ammonoid biostratigraphy; Baculites ovatus zone. STRATIGRAPHIC POSITION: List representing upper part of formation.

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, sideritic, black, gray shale

• ENVIRONMENT: Siliciclastic marine.
• SPECIFIC LITHOLOGY: Dark grey to black marine shales, which in some parts contain abundant sideritic concretions, minor siltstone, sandstone and limestone. LITHIFICATION: Lithified.

Size class: macrofossils

Preservation: cast, mold/impression, concretion, replaced with siderite

Reposited in the GSC

Collection methods: surface (in situ),

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

Primary reference: P. S. Warren and R. L. Rutherford. 1928. American Journal of Science. 16:129-136 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87434: authorized by Austin Hendy, entered by Austin Hendy on 17.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for marine invertebrates. NOMENCLATURE: Not an authoritative publication, and with relatively antiquated nomenclature but species-resolution identifications.
Cephalopoda
 Ammonitida - Scaphitidae
"Scaphites leei" = Scaphites (Scaphites) leei Reeside 1927 ammonite
Desmoscaphites bassleri Reeside 1927 ammonite
 Ammonitida - Baculitidae
Baculites ovatus Say 1820 ammonite
SUBSPECIES: Baculites ovatus haresi
Baculites aquilaensis Reeside 1927 ammonite
SUBSPECIES: Baculites aquilaensis separatus
Bivalvia
 Pholadomyida - Pholadomyidae
 Cardiida - Veneridae
? Callista sp. Poli 1791 venus clam
 Cardiida - Tellinidae
? Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Tancrediidae
Tancredia americana Meek and Hayden 1857 clam
 Cardiida - Cardiidae
 Myalinida - Inoceramidae
Inoceramus sp. Sowerby 1814 clam
 Pectinida - Oxytomidae
Oxytoma nebrascana Evans and Shumard 1857 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
Ostrea congesta Conrad 1843 oyster