Loc. M-38 - River Kajisako [Nagase Fm]: Cenomanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Nuculida
- Nuculidae
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Acila (Truncacila) hokkaidoensis
(Nagao 1932)
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C category | |||||||||
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus (Inoceramus) aff. ginterensis
Pergament 1966
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Matsumoto et al. 1982 | R category | ||||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris (Hanaia) cf. hokkaidoensis
(Yabe and Nagao 1928)
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A category | |||||||||
| (5 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan | County: | Shikoku |
| Coordinates: | 33.8° North, 134.0° East (view map) | ||
| Paleocoordinates: | 46.9° North, 127.3° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
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
| Formation: | Nagase | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Nagase Fm, which is overlain by the Kajisako Fm. AGE: Cenomanian, on the basis of ammonite, inoceramid, and radiolarian biostratigraphy. STRATIGRAPHIC POSITION: From lower lithostratigraphic unit in regional section; near top of upper part of Nagase Fm. | |||||
Lithology and environment
| Primary lithology: | gray lithified siltstone |
| Secondary lithology: | fine lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Alternations of dark-grey siltstone and fine-grained sandstone. LITHIFICATION: Lithified, on the basis of figured specimens and taphonomic description. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow marine siliciclastic setting. | |
Taphonomy
| Modes of preservation: | mold/impression |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Multiple collectors. REPOSITORY: Dept. of Geology, Kyushu University, Japan. | |
| Taxonomic list comments:COVERAGE: Probably not exhaustive, but including ammonoidea, inoceramids, bivalves, and radiolarians. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications. | |
Metadata
| Also known as: | Loc. N-9 | ||
| Database number: | 87007 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-02-27 20:29:01 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-02-27 20:29:01 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 29274. | M. Tashiro and T. Kozai. 1982. Part V. Bivalve fossils from the Upper Cretaceous of the Monobe area, Shikoku. Palaeontological Society of Japan Special Papers 25:69-92 [A. Hendy/A. Hendy] |
Secondary references:
| 29279 | T. Matsumoto, M. Noda, and T. Kozai. 1982. Part VI. Upper Cretaceous inoceramids from the Monobe area, Shikoku. Palaeontological Society of Japan Special Papers 25:53-68 [A. Hendy/A. Hendy] |