Loc. X 1117 - Ikushunbetsu: Coniacian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Scaphitidae
|
|||||||
| see common names | |||||||
Geography
| Country: | Japan | County: | Hokkaido |
| Coordinates: | 43.7° North, 142.1° East (view map) | ||
| Paleocoordinates: | 51.7° North, 139.4° East (Wright 2013) | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
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
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an unnamed lithostratigraphic unit, possibly the Saku Formation, which overlies pre-Cenomaniann Cretaceous deposits. AGE: Coniacian, based on ammonite biostratigraphy. STRATIGRAPHIC POSITION: From top of local regional section | |||||
Lithology and environment
| Primary lithology: | tuffaceous lithified siltstone |
| Includes fossils? | Y |
| Lithology description: GENERAL LITHOLOGY: Siltstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Inshore to nearshore and nearshore to offshore or deeper waters. | |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera,some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Tanabe et al. (1977). REPOSITORY: Dept. of Geology, Kyushu University, Japan. | |
| Taxonomic list comments:COVERAGE: Limited to representative scaphitid ammonites. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications. | |
Metadata
| Database number: | 86991 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-02-26 22:28:45 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2009-02-26 22:28:45 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 29266. | K. Tanabe. 1977. Mid-Cretaceous scaphitid ammonites from Hokkaido. Palaeontological Society of Japan Special Papers 21:11-22 [A. Hendy/A. Hendy] |