Kurosawa river, Kesennuma City: Capitanian, Japan
collected by H. Araki 1979
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Chondrichthyes
- Eugeneodontiformes
- Helicoprionidae
|
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 39.0° North, 141.5° East (view map) |
| Paleocoordinates: | 3.9° North, 136.0° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Capitanian | 10 m.y. bin: | Permian 4 |
| Key time interval: | Capitanian | ||
| Age range of interval: | 264.28 - 259.857 m.y. ago |
Stratigraphy
| Formation: | Ochiai | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Stratigraphically about 110-120 m above Lepidolina-bearing lenticular limestone, just above Timorites-bearing ammonoid fauna listed in paper and described by Ehiro and Araki (1997). | |||||
Lithology and environment
| Primary lithology: | lithified mudstone |
| Environment: | deep-water indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | H. Araki | Collection dates: | 1979 |
Metadata
| Database number: | 149339 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | vertebrate |
| Created: | 2013-08-02 00:49:35 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2013-08-02 00:49:35 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 47797. | H. Araki. 1980. Discovery of Helicoprion, a Chondrichthyes from Kesennuma City, Miyagi Prefecture, Japan. Journal of the Geological Society of Japan 86:135-137 [M. Clapham/M. Clapham] |