Heki, Y-14, Shimoyakuno: Olenekian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Gastropoda
- Murchisoniina
- Rhaphistomellidae
|
|||||||
|
Bivalvia
- Pectinida
- Aviculopectinidae
|
|||||||
|
Rhynchonellata
- Spiriferinida
- Spiriferinidae
|
|||||||
|
"Spiriferina" sp.
d'Orbigny 1847
|
|||||||
| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 35.3° North, 135.0° East (view map) |
| Paleocoordinates: | 4.3° North, 132.5° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Olenekian | ||
| Age range of interval: | 250.8 - 247 m.y. ago |
Stratigraphy
| Geological group: | Yakuno | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Middle Formation | |||||
Lithology and environment
| Primary lithology: | fine lithified sandstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 115241 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2011-08-31 10:59:52 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2011-08-31 10:59:52 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 33624. | K. Nakazawa. 1953. Discovery of Claraia and Eumorphotis from Triassic Yakuno Group, Kyoto Pref, Japan. Memoirs of the College of Science, University of Kyoto, Series B 20:261-269 [M. Clapham/M. Clapham/M. Clapham] |