Wakihara, Kanazawa City: Langhian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Chondrichthyes
- Lamniformes
- Lamnidae
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Chondrichthyes
- Lamniformes
- Otodontidae
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 36.6° North, 136.8° East (view map) |
| Paleocoordinates: | 36.2° North, 135.2° East (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | ||
| Age range of interval: | 15.98 - 13.82 m.y. ago |
Stratigraphy
| Formation: | Yamashina | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "Basal part of the Takakubo Formation (Late Miocene)." Takakubo Formation revised as the Saikawa Formation, which was redefined as the Yamashina and Saikawa Formations by Yamada et al. (2017). According to Yamada et al. (2017), the Yamashina Formation contains diatoms which indicate ca.15.6-15.4 Ma within the diatom zone NPD4A. The overlying Saikawa Formation contains diatoms considered to be reworked. However, calcareous nannofossils of the zone CN5a (13.6-11.8 Ma) were reported from the Saikawa Formation in a previous study. | |||||
Lithology and environment
| Primary lithology: | fine conglomerate |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera |
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: Repository: Department of Earth Sciences, Faculty of Science, Kanazawa University. | |
Metadata
| Database number: | 161498 | ||
| Authorizer: | C. Jaramillo | Enterer: | C. Pimiento |
| Modifier: | M. Clapham | ||
| Created: | 2014-09-06 21:38:52 | Last modified: | 2026-03-23 12:46:19 |
| Access level: | the public | Released: | 2014-09-06 21:38:52 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 52618. | H. Karasawa. 1989. Late Cenozoic elasmobranchs from the Hokuriku district, central Japan. Science Reports of Kanazawa University 34(1):1-57 [C. Jaramillo/C. Pimiento/M. Clapham] |