Singh (1983) Sample A-17: Middle Cenomanian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Pteridopsida
- Marsileales
|
|||||||
|
Arcellites disciformis megaspore
Miner 1935
|
1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | British Columbia |
| Coordinates: | 56.1° North, 120.0° West (view map) | ||
| Paleocoordinates: | 58.4° North, 72.8° West | ||
| Basis of coordinate: | stated in text |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| *Period: | Cretaceous - Cretaceous | *Epoch: | Late - Late |
| *International age/stage: | Middle Cenomanian - Middle Cenomanian | ||
| Key time interval: | Middle Cenomanian | Zone: | Beattonoceras, Acanthoceras, Inoceramus dunveganensis |
| Age range of interval: | 100.50000 - 93.90000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Dunvegan | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: This formation is in the Beattonoceras, Acanthoceras, and Inoceramus dunveganensis molluscan biozones. | |||||
Lithology and environment
| Primary lithology: | "shale" |
| Includes fossils? | Y |
| Lithology description: The Dunvegan Formation consists of medium- to coarse-grained, carbonaceous, cross-bedded, deltaic sandstones, with greyish green, non-marine, carbonaceous shales. There are also some brackish to marine phases in the middle of the succession, represented by dark grey shales, siltstones, and oyster beds. A few thin coaly beds are developed locally. Individual samples not specifically described. | |
| Environment: | fluvial-deltaic indet. |
Taphonomy
| Modes of preservation: | original sporopollenin |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Oyster beds are reported, but not included in taxonomic list. | |
Metadata
| Also known as: | Singh (1983) Sample A-17 | ||
| Database number: | 31730 | ||
| Authorizer: | R. Lupia | Enterer: | B. Wilborn |
| Modifier: | B. Wilborn | Research group: | paleobotany |
| Created: | 2003-05-23 13:24:03 | Last modified: | 2003-05-23 17:34:39 |
| Access level: | group members | Released: | 2003-05-23 13:24:03 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 8534. | C. Singh. 1983. Cenomanian microfloras of the Peace River area, northwestern Alberta. Bulletin of the Alberta Research Council 44:1-322 [R. Lupia/B. Wilborn/B. Wilborn] |