Loc. 22, Pakowki Coulee [Foremost Mbr, Judith River Fm]: Middle Campanian, Canada
collected by Russell & Landes 1934-1936
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites obtusus
(Meek 1876)
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Gastropoda
- Naticidae
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Polinices subcrassa
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Bivalvia
- Cardiida
- Mactridae
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Mactra sp.
Linnaeus 1767
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Bivalvia
- Cardiida
- Tellinidae
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Tellina maylandensis
Russell and Landes 1937
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| see common names | |||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 49.1° North, 110.9° West (view map) | ||
| Paleocoordinates: | 56.4° North, 76.5° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Middle Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Geological group: | Belly River | Formation: | Foremost | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 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 the basal 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. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: lithified. | |
| Environment: | transition zone/lower shoreface |
| Geology comments: ENVIRONMENT: Very shallow siliciclastic marine setting. | |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection methods: | surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | GSC | ||
| Collectors: | Russell & Landes | Collection dates: | 1934-1936 |
| Collection method comments: COLLECTOR: L.S. Russell and R. W. Landes. REPOSITORY: Geological Survey of Canada (GSC) | |||
| Taxonomic list comments:COVERAGE: Exhaustive for bivalvia, gastropoda, scaphopoda, and cephalopoda. | |||
Metadata
| Database number: | 82680 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Varnham | Research group: | marine invertebrate |
| Created: | 2008-07-31 06:30:15 | Last modified: | 2022-03-21 06:36:14 |
| Access level: | the public | Released: | 2008-07-31 06:30:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27815. | 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] |