Meshikuni Fm - Tp-1: Early/Lower Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Turritellidae
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Turritella sp.
Lamarck 1799
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Bivalvia
- Solemyida
- Solemyidae
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Acharax sp.
Dall 1908
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Bivalvia
- Lucinida
- Lucinidae
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Lucinoma acutilineata
(Conrad 1849)
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Bivalvia
- Pholadida
- Myidae
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Mya sp.
Linnaeus 1758
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Bivalvia
- Cardiida
- Tellinidae
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Macoma optiva
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Macoma sp.
Leach 1819
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see common names |
Geography
Country: | Japan |
Coordinates: | 45.3° North, 141.0° East (view map) |
Paleocoordinates: | 46.1° North, 139.1° East |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
Key time interval: | Early/Lower Miocene | ||
Age range of interval: | 23.03000 - 15.98000 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: | 70356 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2007-03-21 09:56:01 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2008-03-21 09:56:01 |
Creative Commons license: | CC BY |
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] |