Confluence of Yoshiyachi-zawa and Ikushumbets: Early Santonian, Japan
collected by Ohmi 1955
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Nautilidae
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Cymatoceras pseudoatlas
(Yabe and Shimizu 1924)
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 43.2° North, 142.1° East (view map) |
| Paleocoordinates: | 51.4° North, 136.8° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early Santonian | Inoceramid zone: | Inoceramus amakusensis |
| Age range of interval: | 85.7 - 83.6 m.y. ago |
Stratigraphy
| Geological group: | Yezo |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | lithified mudstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Ohmi | Collection dates: | 1955 |
| Collection method comments: Repository: Geological Collection, Kyushu University | |||
Metadata
| Database number: | 166248 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2015-02-06 21:59:45 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2015-02-06 21:59:45 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 54317. | T. Matsumoto and K. Muramoto. 1983. Cretaceous nautiloids from Hokkaido - II. Part 2. Three nautiloid species from the Santonian and Campanian of Hokkaido. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 130:85-95 [M. Clapham/M. Clapham] |