Hobetsu Area, Middle Yezo Group, Hokkaido: Cenomanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus (Birostrina) concentricus
Parkinson 1819
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| recombined as Inoceramus (Actinoceramus) concentricus | ||||||||||
| subsp. nipponicus | ||||||||||
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Inoceramus (Inoceramus) yabei
Nagao and Matsumoto 1939
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Iburi |
| Coordinates: | 42.8° North, 142.5° East (view map) | ||
| Paleocoordinates: | 52.2° North, 136.8° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Cenomanian | ||
| Age range of interval: | 100.50000 - 93.90000 m.y. ago |
Stratigraphy
| Geological group: | Middle Yezo |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | gray "shale" |
| Secondary lithology: | sandstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 39654 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2004-06-02 05:48:44 | Last modified: | 2004-06-28 08:13:21 |
| Access level: | the public | Released: | 2004-06-02 05:48:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 10664. | I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg] |