Section 9, bed 16 [Hinoshima Fm]: Late/Upper Santonian, Japan
collected by Komatsu et al.
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Collignoniceratidae
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Texanites sp.
Spath 1932
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Cephalopoda
- Ammonitida
- Diplomoceratidae
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Polyptychoceras haradanum
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Bivalvia
- Nuculida
- Nuculidae
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Nucula formosa
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Bivalvia
- Nuculanida
- Nuculanidae
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Ezonuculana sp.
Nagao 1938
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Ezonuculana mactraeformis
(Nagao 1932)
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 32.5° North, 130.5° East (view map) |
| Paleocoordinates: | 41.6° North, 121.4° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Late/Upper Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Hinoshima | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Hinoshima Fm, which locally unconformably overlies granitic rocks, and is overlain by the Amura Fm (Campanian) AGE: Late Santonian-Campanian. Here assigned to Late Santonian on the basis of stratigraphic position. STRATIGRAPHIC POSITION: From bed 16, near middle of section. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal poorly lithified mudstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Shelly mudstone. LITHIFICATION: Poorly-lithified on the basis of figured specimens. | |
| Environment: | deltaic indet. |
| Geology comments: ENVIRONMENT: Bottomsets-bay, within a bayhead delta-bay. | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils |
| Associated major elements: | none |
| Disassociated major elements: | many |
Collection methods and comments
| Collection methods: | bulk,surface (in situ),field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collectors: | Komatsu et al. |
| Collection method comments: COLLECTORS: Komatsu et al. REPOSITORY: KMSP, Faculty of Science, Kumamoto University, Japan. | |
| Taxonomic list comments:COVERAGE: Exhaustive for bivalvia and ammonoidea. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature and species-resolution identfications. | |
Metadata
| Database number: | 82354 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-07-26 11:15:25 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-07-26 11:15:25 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27747. | T. Komatsu, M. Ono, H. Naruse and T. Kumagae. 2008. Upper Cretaceous depositional environments and bivalve assemblages of far-east Asia: the Himenoura Group, Kyushu, Japan. Cretaceous Research 29:489-508 [A. Hendy/A. Hendy] |