Locality B - Hikoshima Nishiyama-cho (Ashiya Gp): Late/Upper Oligocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris cisshuensis
Makiyama 1926
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f category | ||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys ashiyaensis
(Nagao 1928)
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f category | ||||||
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Bivalvia
- Carditida
- Crassatellidae
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Crassatella (Crassatina) oblongata
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f category | ||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia (Cyclocardia) cf. vestitoides
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r category | ||||||
| original and current combination Cyclocardia | |||||||
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Bivalvia
- Lucinida
- Lucinidae
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? Lucinoma sp.
Dall 1901
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r category | ||||||
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Bivalvia
- Cardiida
- Tellinidae
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Macoma nagaoi
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r category | ||||||
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Tellina sp.
Linnaeus 1758
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r category | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Dosinia (Phacosoma) chikuzenensis
Nagao 1928
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c category | ||||||
| synonym of Dosinia nomurai | |||||||
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Pitar ashiyaensis
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f category | ||||||
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Macrocallista hanzawai
Nagao 1928
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c category | ||||||
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Bivalvia
- Solenida
- Solenidae
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Solen connectens
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r category | ||||||
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Bivalvia
- Nuculanida
- Yoldiidae
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Yoldia (Tepidoleda) hikoshimensis
Hirayama 1956
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f category | ||||||
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Bivalvia
- Nuculida
- Nuculidae
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Acila aff. ashiyaensis
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r category | ||||||
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Gastropoda
- Turritellidae
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Turritella karatsuensis
Nagao 1928
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r category | ||||||
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Gastropoda
- Naticidae
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Euspira karatsuensis
|
r category | ||||||
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Euspira ashiyaensis
Nagao 1928
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f category | ||||||
| synonym of Euspira meisensis | |||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Siphonalia sp.
Adams 1863
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r category | ||||||
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Ancistrolepis sp.
Dall 1895
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r category | ||||||
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Antillophos fusiforme
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r category | ||||||
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Gastropoda
- Neogastropoda
- Nassariidae
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Molopophorus denselineatus
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r category | ||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Musashia (Nipponomelon) cf. striata
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r category | ||||||
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Gastropoda
- Cassidae
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Semicassis kanmonensis
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r category | ||||||
| see common names | |||||||
Geography
| Country: | Japan | State/province: | Yamaguchi |
| Coordinates: | 34.0° North, 130.9° East (view map) | ||
| Paleocoordinates: | 39.2° North, 127.4° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Chattian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Late/Upper Oligocene | ||
| Age range of interval: | 27.82000 - 23.03000 m.y. ago |
Stratigraphy
| Geological group: | Ashiya | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: No stratigraphic data available as manuscript is in Japanese. | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: The Ashiya Group is characterised by a sandstone-dominant shallw marine sequence (about 150 m thick), in which sedimentary facies include cross-stratified sandstone, parallel stratified sandstone, bioturbated sandstone, and sandstone/siltstone couplet facies. | |
| Environment: | coastal indet. |
| Geology comments: Sedimentary facies and molluscan assemblages suggest an environment in the upper euneritic zone of a temperate to subtropical sea. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection methods: | bulk,selective quarrying,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: No collection data available as manuscript is in Japanese. Material is reposited in the Dept of Earth and Planetary Sciences, Faculty of Science, Kyushu University, and in Shimonoseki City Archaeological Museum, Shimonoseki. | |
| Taxonomic list comments:Taxonomic list is exhaustive for mollusca and includes other groups (Penguins, Sharks etc). Nomenclature is of a high quality. | |
Metadata
| Database number: | 51447 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-06-05 12:29:43 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2006-06-05 12:29:43 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13684. | K. Okamoto and T. Sakai. 1995. Sedimentary facies and fossil molluscs of the Oligocene Ashiya Group in the Hikoshima Takenokojim and Nishiyama area, Shimonoseki City, Southwest Japan. Bulletin of the Mizunami Fossil Museum 22:19-50 [A. Miller/A. Hendy/A. Hendy] |