2 km downsteam from the Kami-Ashibetsu dam on the floor of the River Ashibetsu: Coniacian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Pachydiscidae
|
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 43.3° North, 142.1° East (view map) |
| Paleocoordinates: | 51.3° North, 139.6° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Coniacian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Coniacian | ||
| Age range of interval: | 89.8 - 85.7 m.y. ago |
Stratigraphy
| Geological group: | Upper Yezo |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | "limestone" |
| Lithology description: calcareous nodule. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 233827 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2024-03-02 18:28:01 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2024-03-02 18:28:01 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 87695. | T. Matsumoto. 1979. Notes on Lewesiceras and Nowakites (pachydiscid ammonites) from the Cretaceous of Hokkaido: studies of the Cretaceous ammonites from Hokkaido and Saghalien - XXXVI. Transactions and proceedings of the Paleontological Society of Japan. New series 113:30-44 [P. Wagner/P. Wagner] |