Kunugidaira Fm - Is-3: Early/Lower Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Potamididae
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Vicarya yokoyamai
Takeyama 1933
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Vicaryella sp.
Yabe and Hatai 1938
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Vicaryella jobanica
Kamada 1960
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Cerithideopsilla cf. yatsuoensis
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| spelled with current rank as Cerithidea (Cerithideopsilla) | |||||||
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Tateiwaia sp.
(Makiyama 1936)
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Gastropoda
- Batillariidae
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Batillaria sp.
Benson 1842
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Gastropoda
- Neogastropoda
- Muricidae
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Mancinella sp.
Link 1807
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| spelled with current rank as Thais (Mancinella) | |||||||
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Bivalvia
- Ostreida
- Ostreidae
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Crassostrea gravitesta
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Bivalvia
- Cardiida
- Trapezidae
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Trapezium (Neotrapezium) isoharense
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 36.8° North, 145.8° East (view map) |
| Paleocoordinates: | 32.3° North, 161.7° East |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Early/Lower Miocene | ||
| Age range of interval: | 23.03000 - 15.98000 m.y. ago |
Stratigraphy
| Formation: | Kunugidaira | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Kunugidaira Fm which lies unconformably above the Early Oligocene Shirasaka Fm of the Shiramizu Gp and below the Goyasu Fm of the Yunagaya Gp (Early Miocene). THICKNESS: From bed within ~80 m section. AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From near top of upper unit of Kunugidaira Fm. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal lithified sandstone |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Oyster bank within bioturbated sandstone. LITHIFICATION: Unknown lithification, presumably lithified on the basis of age. | |
| Environment: | shoreface |
| Geology comments: ENVIRONMENT: Intertidal and subtropical mollusca. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: Not stated, but presumably the authors A. Yabe, K. Ogasawara, and K. Uemura, and A. Obuse. REPOSITORY: Not stated in text. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Not authoritative publication, but with species-level and subgenus assignments. | |
Metadata
| Database number: | 70323 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-03-21 08:31:40 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | authorizer only | Released: | 2007-03-21 08:31:39 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23601. | A. Yabe, K. Ogasawara, and A. Obuse. 1995. Plant and molluscan fossil assemblages rom the Lower Miocene Kunugidaira Formation in the southern part of the Joban coal-field. Journal of the Geological Society of Japan 101(7):532-548 [A. Hendy/A. Hendy] |