Nakamata-zawa River, Horonakai area: Early Cenomanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ammonitida
- Tetragonitidae
|
|||||||
|
Parajaubertella kawakitana
Matsumoto 1943
|
|||||||
| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 44.3° North, 142.1° East (view map) |
| Paleocoordinates: | 50.6° North, 147.0° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Early Cenomanian | ||
| Age range of interval: | 100.5 - 93.9 m.y. ago |
Stratigraphy
| Geological group: | Yezo | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: My3 Unit (Graysonites wooldridge Zone and Stoliczkaia japonica Assemblage Zone) | |||||
Lithology and environment
| Primary lithology: | concretionary lithified "siliciclastic" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: National Museum of Nature and Science, Tsukuba (NMNS) | |
Metadata
| Database number: | 229678 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2023-03-21 23:01:21 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2023-03-21 23:01:21 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 84170. | Y. Shigeta, H. Maeda, and T. Sakai. 2023. Dimorphism in the Early Cenomanian (Late Cretaceous) ammonoid Parajaubertella. Paleontological Research 27:396-416 [M. Clapham/M. Clapham] |