Loc. 7, Bear Gulch [Bear Gulch Mbr, Pawkowki Fm]: Early/Lower Campanian, Canada
collected by Russell & Landes 1934-1936
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Epitoniidae
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Acirsa meeki
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Gastropoda
- Rissoidae
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Rissoina albertensis
Russell and Landes 1937
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Bivalvia
- Hiatellida
- Hiatellidae
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? Saxicava albertensis
Russell and Landes 1937
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Bivalvia
- Pholadida
- Corbulidae
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Corbula ursaniensis
Russell and Landes 1937
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Bivalvia
- Cardiida
- Mactridae
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Mactra warrenana
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Bivalvia
- Mytilida
- Mytilidae
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Volsella wrighti
(Warren 1934)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea russelli
Russell and Landes 1937
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Cephalopoda
- Ammonitida
- Placenticeratidae
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Placenticeras meeki
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites ovatus
(Say 1820)
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see common names |
Geography
Country: | Canada | State/province: | Alberta |
Coordinates: | 49.1° North, 111.1° West (view map) | ||
Paleocoordinates: | 57.4° North, 76.9° 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: | Early/Lower Campanian | ||
Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
Formation: | Pawkowki | Member: | Bear Gulch | ||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Bear Gulch Mbr of the Pawkowki Formation, which overlies the Early Campanian Milk River Formation, is equivalent to the Lea Park Fm, and is overlain by the Judith River Fm (Late Campanian). AGE: Early Campanian on the basis of ammonite (and other groups) biostratigraphy; Baculites obtusus biozone. Early Campanian according to Dawson et el. - Geological Atlas of the Western Canada Sedimentary Basin. STRATIGRAPHIC POSITION: From unknown part of the Bear Gulch Mbr. |
Lithology and environment
Primary lithology: | poorly lithified "siliciclastic" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Not stated in text, but certainly siliciclastic, probably shale. LITHIFICATION: Poorly-lithified. | |
Environment: | offshore |
Geology comments: ENVIRONMENT: Offshore siliciclastic marine setting. |
Taphonomy
Modes of preservation: | body,cast,mold/impression,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: | 82652 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-07-30 18:17:11 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2008-07-30 18:17:11 |
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] |