Member C, Soya area: Early/Lower Campanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Myalinida
- Inoceramidae
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Sphenoceramus schmidti
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spelled with current rank as Inoceramus (Sphenoceramus) | |||||||
see common names |
Geography
Country: | Japan | County: | Hokkaido |
Coordinates: | 45.5° North, 141.9° East (view map) | ||
Paleocoordinates: | 50.1° North, 130.0° East | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | local area |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Early/Lower Campanian | ||
Age range of interval: | 83.50000 - 70.60000 m.y. ago |
Stratigraphy
Formation: | Ohimisaki | ||||
Stratigraphic resolution: | member | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From "Member C" of the Ohimisaki Fm, which is overlain by the Orannai Fm. AGE: Early Campanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From near base of regional section. |
Lithology and environment
Primary lithology: | "cross stratification",medium,coarse lithified sandstone |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Medium-to coarse-grained, cross-bedded sandstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
Environment: | coastal indet. |
Geology comments: ENVIRONMENT: Not stated in text, but presumably a shallow siliciclastic setting. |
Taphonomy
Modes of preservation: | mold/impression |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some genera,some macrofossils |
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: COLLECTOR: Not stated, but presumably the authors T. Matsumoto and T. Miyauchi. REPOSITORY: Dept. of Geology, Kyushu University, Japan. | |
Taxonomic list comments:COVERAGE: Limited to characteristics ammonites described in text. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications. |
Metadata
Also known as: | Loc. W4B | ||
Database number: | 87036 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2009-03-01 20:14:53 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2009-03-01 20:14:53 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
29280. | T. Matsumoto. 1984. Part I. Ammonites from the Upper Campanian of the Teshio Mountains. Palaeontological Society of Japan Special Papers 27:5-32 [A. Hendy/A. Hendy/A. Hendy] |