Hirooka, Kamo, Sakawa area, Tosakamo Formation, Kochi: Aptian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Carditida
- Astartidae
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Astarte (Astarte) subsenecta
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2 specimens | ||||||
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Bivalvia
- Cardiida
- Cardiidae
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? Laevicardium ishidoense
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2 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 33.5° North, 133.3° East (view map) |
| Paleocoordinates: | 44.5° North, 134.4° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Aptian | 10 m.y. bin: | Cretaceous 3 |
| Key time interval: | Aptian | ||
| Age range of interval: | 121.40000 - 113.00000 m.y. ago |
Stratigraphy
| Formation: | Tosakamo | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: lower member of the Tosakamo Formation | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Lithology description: fine-grained sandstone | |
| Environment: | marine indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 69104 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate |
| Created: | 2007-02-19 02:13:53 | Last modified: | 2007-02-19 04:13:53 |
| Access level: | the public | Released: | 2007-02-19 02:13:52 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 19920. | M. Tashiro and T. Matsuda. 1986. Lower Cretaceous bivalves from the Sakawa area, Shikoku. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 142:366-392 [W. Kiessling/U. Merkel] |