Itahana Fm Molluscan Fauna Locality 13: Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Potamididae
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? Cerithidea sp.
Swainson 1840
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Gastropoda
- Cerithiidae
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Cerithium kobelti
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea gravitesta
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| Dominant species at locality | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 36.0° North, 139.0° East (view map) |
| Paleocoordinates: | 38.7° North, 136.5° East |
| Basis of coordinate: | based on political unit |
| Geographic resolution: | local area |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5-6 | ||
| Key time interval: | Miocene | ||
| Age range of interval: | 23.03000 - 5.33300 m.y. ago |
Stratigraphy
| Formation: | Itahana | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: formations cover unconformably the Paleozoic sedimentary rocks and crystalline shists | |||||
Lithology and environment
| Primary lithology: | lithified conglomerate |
| Secondary lithology: | tuff |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: The Itahana formation is composed of much coarser clastic sediments than the lower two formations. Lithofacies of the formation is changable within one horizon. Most of conglomeratic layers are lens shaped. A thick tuff bed and lignite are found in the upper part. Molluscan fossils occur richly. | |
| Environment: | marginal marine indet. |
| Glacial or sequence phase: | regressive |
| Geology comments: Overlies Yoshii and Fukushima formation and underlies Akima formation. | |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Also known as: | Locality 13 | ||
| Database number: | 52332 | ||
| Authorizer: | A. Miller | Enterer: | K. Bulinski |
| Modifier: | K. Bulinski | Research group: | marine invertebrate |
| Created: | 2005-08-03 11:48:58 | Last modified: | 2005-08-03 14:48:58 |
| Access level: | the public | Released: | 2005-08-03 11:48:57 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13978. | Y. Iwasaki. 1970. The Shiobara-type Molluscan Fauna: An ecological analysis of fossil molluscs. Journal of the faculty of science, University of Tokyo, Section 2 17(3):351-444 [A. Miller/K. Bulinski/K. Bulinski] |