Chirashinaigawa Creek, Kj7: Middle Albian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Lytoceratidae
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| see common names | |||||||
Geography
| Country: | Japan | State/province: | Hokkaido |
| Coordinates: | 44.7° North, 142.1° East (view map) | ||
| Paleocoordinates: | 50.2° North, 149.9° East (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Middle Albian | ||
| Age range of interval: | 110.1 - 106.3 m.y. ago |
Stratigraphy
| Geological group: | Lower Yezo | Formation: | Kamiji | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The Kamiji Formation is the lowest unit of the Yezo Group. Sample from unit 7 of the Kamiji Formation | |||||
Lithology and environment
| Primary lithology: | lithified mudstone |
| Lithology description: mudstone with felsic tuff | |
| Environment: | marine indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 92726 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate |
| Created: | 2009-11-26 04:46:31 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2009-11-26 04:46:31 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 31256. | Y. Iba. 2009. An Early Albian Arctic-type ammonite Arcthoplites from Hokkaido, northern Japan, and its paleobiogeographic and paleoclimatological implications. Journal of Asian Earth Sciences 34:46-50 [W. Kiessling/U. Merkel] |