Kaigarazaka, Naganuma, locality 2-4: Chibanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Neogastropoda
- Pseudomelatomidae
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Gastropoda
- Neogastropoda
- Nassariidae
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Gastropoda
- Archaeogastropoda
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Bivalvia
- Pectinida
- Pectinidae
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Pecten albicans naganumanus
Schröter 1802
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Bivalvia
- Arcida
- Arcidae
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Chondrichthyes
- Lamniformes
- Lamnidae
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Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Carcharhinus sp.
de Blainville 1816
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 35.4° North, 139.5° East (view map) |
| Paleocoordinates: | |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Chibanian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Chibanian | ||
| Age range of interval: | 0.774 - 0.129 m.y. ago |
Stratigraphy
| Formation: | Naganuma | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: From the middle part of the Naganuma Formation. The Naganuma Formation is dated around 0.5 Ma from biostratigraphy and ash beds (Ozawa, 2019). | |||||
Lithology and environment
| Primary lithology: | gray,blue unlithified "shale" |
| Lithology description: Bluish-gray shale | |
| Environment: | coastal indet. |
| Geology comments: Mollusks suggest sublittoral setting | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Collection method comments: Repository: Kanagawa Prefectural Museum | |
Metadata
| Database number: | 277597 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | vertebrate |
| Created: | 2026-01-31 20:08:07 | Last modified: | 2026-01-31 20:08:07 |
| Access level: | the public | Released: | 0000-00-00 00:00:00 |
| Creative Commons license: |
Reference information
Primary reference:
| 94081. | T. Uyeno and Y. Matsushima. 1979. Comparative study of teeth from Naganuma Formation of Middle Pleistocene and Recent specimens of the great white shark, Carcharodon carcharias from Japan. Bulletin of the Kanagawa Prefectural Museum, Natural Science 11:11-30 [M. Clapham/M. Clapham] |