List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Carcharhiniformes
- Hemigaleidae
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| 1 specimen | ||||||||||
| KPM-NN0000028 | ||||||||||
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Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Carcharhinus sp.
de Blainville 1816
|
2 specimens | |||||||||
| KPM-NN0000616, 595 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 35.3° North, 139.6° East (view map) |
| Paleocoordinates: | 35.0° North, 138.6° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Stratigraphy
| Formation: | Zushi | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Position within the Zushi Formation not specified. The microfossil biostratigraphy of the Zushi Formation was established based on calcareous nannofossils (Kanie et al., 1991). The majority of nannofossils recovered from the lower part of the Zushi Formation correspond to Zone CN9 (8.29-5.59 Ma; age dates based on Anthonissen and Ogg, 2012), spanning a duration of 2.7 million years. The Hk Tuff key bed, interbedded within the upper part of the Zushi Formation, yielded a K-Ar age of 4.1 ± 0.6 Ma (Saito et al., 1997); this result is consistent with the age dates for Subzones CN10b-CN10c (5.35-4.50 Ma) reported by Kanie et al. (1991). The Ok tuff bed in the lower part of the formation was dated as 6.3 +/- 0.4 Ma by fission track (Kasuya, 1987). | |||||
Lithology and environment
| Primary lithology: | "siliciclastic" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 278433 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | vertebrate |
| Created: | 2026-03-21 21:42:47 | Last modified: | 2026-03-21 21:42:47 |
| Access level: | the public | Released: | 0000-00-00 00:00:00 |
| Creative Commons license: |
Reference information
Primary reference:
| 94377. | T. Tanaka. 2001. Fossil elasmobranchs from the Miura Group (Late Miocene-Early Pliocene) in the Miura Peninsula, central Japan. Bulletin of the Kanagawa Prefectural Museum, Natural Science 22:73-80 [M. Clapham/M. Clapham] |