Loc. 9, Halfbreed Creek [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
|
|||||||
|
Acirsa meeki
|
|||||||
|
Gastropoda
- Neogastropoda
- Buccinidae
|
|||||||
|
? Cantharus sp.
Röding 1798
|
|||||||
|
Gastropoda
- Neogastropoda
- Fasciolariidae
|
|||||||
|
Fasciolaria sp.
Lamarck 1799
|
|||||||
|
Gastropoda
- Naticidae
|
|||||||
|
Polinices subcrassa
|
|||||||
|
Bivalvia
- Cardiida
- Cardiidae
|
|||||||
|
Cardium ursaniense
Russell and Landes 1937
|
|||||||
|
Bivalvia
- Mytilida
- Mytilidae
|
|||||||
|
Volsella wrighti
(Warren 1934)
|
|||||||
|
Bivalvia
- Ostreida
- Ostreidae
|
|||||||
|
Ostrea sp.
Linnaeus 1758
|
|||||||
|
Ostrea albertensis
Russell and Landes 1937
|
|||||||
|
Ostrea russelli
Russell and Landes 1937
|
|||||||
|
Bivalvia
- Pectinida
- Oxytomidae
|
|||||||
|
Pteria nebrascana
(Evans and Shumard 1857)
|
|||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 49.1° North, 111.1° West (view map) | ||
| Paleocoordinates: | 56.5° North, 76.7° 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: | 82654 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-07-30 18:18:58 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-07-30 18:18:58 |
| 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] |