Loc. 13, Halfbreed Creek [upper Pawkowki Fm]: Early/Lower Campanian, Canada
collected by Russell & Landes 1934-1936
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Volsella dichotoma
Whiteaves 1885
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Bivalvia
- Pholadida
- Pholadidae
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Martesia cuneiformis
(Say 1822)
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see common names |
Geography
Country: | Canada | State/province: | Alberta |
Coordinates: | 49.1° North, 111.2° West (view map) | ||
Paleocoordinates: | 57.3° North, 76.2° 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: | 83.50000 - 70.60000 m.y. ago |
Stratigraphy
Formation: | Pawkowki | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From 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 the upper Pakowki Fm. |
Lithology and environment
Primary lithology: | lithified "siliciclastic" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Not stated in text, but certainly siliciclastic. 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: | 82671 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2008-07-31 06:02:56 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2008-07-31 06:02:56 |
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] |