Meshikuni Fm - Tp-2: Early Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Cardiida
- Tellinidae
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Gastropoda
- Naticidae
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"Natica" sp.
Scopoli 1777
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 45.3° North, 141.0° East (view map) |
| Paleocoordinates: | 45.6° North, 136.9° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Early Miocene | ||
| Age range of interval: | 23.04 - 15.98 m.y. ago |
Stratigraphy
| Formation: | Meshikuni | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Meshikuni Fm, which unconformably overlies the Cretaceous Rebun Gp and is unconformably overlain by the Hamanaka Fm (?Middle Miocene). THICKNESS: Formation reaches thicknesses of ~250 m (composite section). AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown part of Meshikuni Fm. | |||||
Lithology and environment
| Primary lithology: | deformed bedding poorly lithified sandstone |
| Secondary lithology: | poorly lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Alternating siltstone and sandstone with deformed bedding. LITHIFICATION: Poorly-lithified on the basis of figured specimens. | |
| Environment: | offshore |
| Geology comments: ENVIRONMENT: Shelf-slope environment; rather deep, muddy bottom. TEMPERATURE: Cool-water. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Y. Noda. REPOSITORY: Institute of Geology and Paleontology, Faculty of Science, Tohoku University, Sendai, Japan. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Authoritative publication, with some species-level identifications (dependent on preservational quality). | |
Metadata
| Database number: | 70357 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-03-21 09:56:42 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | authorizer only | Released: | 2008-03-21 09:56:42 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 23605. | Y. A. Noda and K. Hoyanagi. 1993. Molluscan fauna from the Miocene Meshikuni Formation on Rebun Island, Northern Hokkaido. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 172:311-327 [A. Hendy/A. Hendy] |