GSC 27064, Bighorn River [Opabin Mbr, Blackstone Fm]: Middle Turonian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus fragilis
Hall and Meek 1856
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Inoceramus lamarcki
Parkinson 1819
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| SUBSPECIES: Inoceramus lamarcki fragilis | ||||||||||
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Bivalvia
- Pectinida
- Anomiidae
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Anomia subquadrata
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Prionocyclus (Collignoniceras) woollgari
(Mantell 1822)
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| recombined as Collignoniceras woollgari | ||||||||||
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Cephalopoda
- Ammonitida
- Scaphitidae
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Scaphites patulus
Cobban 1951
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Scaphites arcadiensis
Moreman 1942
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 52.8° North, 116.8° West (view map) | ||
| Paleocoordinates: | 56.6° North, 75.1° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Turonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Middle Turonian | Ammonoid zone: | Collignoniceras woollgari |
| Age range of interval: | 93.90000 - 89.80000 m.y. ago |
Stratigraphy
| Formation: | Blackstone | Member: | Opabin | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Opabin Mbr of the Blackstone Fm, which overlies the Haven Mbr of the Blackstone Fm and is overlain by the Cardium Fm. AGE: Middle Turonian, on the basis of ammonoid biostratigraphy; Collignoniceras woollgari zone. STRATIGRAPHIC POSITION: From unit 35 within section 5-34. | |||||
Lithology and environment
| Primary lithology: | concretionary "shale" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Concretionary shales. LITHIFICATION: Not described in text. | |
| Environment: | marine indet. |
| Geology comments: ENVIRONMENT: Siliciclastic marine. | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | GSC |
| Collection method comments: COLLECTOR: Stott, c. 1960's. REPOSITORY: Geological Survey of Canada. | |
| Taxonomic list comments:COVERAGE: Exhaustive for marine invertebrates. NOMENCLATURE: An authoritative publication, and with relatively antiquated nomenclature but species-resolution identifications. | |
Metadata
| Also known as: | Loc. 22 (of Braunberger & Hall, 2001) | ||
| Database number: | 89212 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-05-10 11:07:38 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-05-10 11:07:38 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 29910. | D. F. Stott. 1963. The Cretaceous Alberta Group and equivalent rocks, Rocky Mountain foothills, Alberta. Geological Survey of Canada Memoir 317:1-306 [A. Hendy/A. Hendy] |
Secondary references:
| 30013 | W. F. Braunberger and R. L. Hall. 2001. Ammonoid faunas from the Cardium Formation (Turonian–Coniacian, Upper Cretaceous) and contiguous units, Alberta, Canada: I. Scaphitidae. Canadian Journal of Earth Sciences 38:333-346 [A. Hendy/A. Hendy] |