Yamanokami, Hoshuyama-mura, Asakura coal-field: Rupelian, Japan
collected by M. Kato, T. Nagao
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Nautilidae
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Nautilus japonicus n. sp.
Shimizu 1926
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| recombined as Eutrephoceras japonicus | ||||||||||
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Cephalopoda
- Nautilida
- Aturiidae
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Aturia yokoyamai
Nagao 1926
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Nagao 1926 | |||||||||
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Bivalvia
- Arcida
- Noetiidae
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Arca (Noetia) pondaungensis
Nagao 1928
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Nagao 1928 | |||||||||
| var. transversa | ||||||||||
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Bivalvia
- Ostreida
- Pinnidae
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Pinna asakuraensis n. sp.
Nagao 1928
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Nagao 1928 | |||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Glycimeris altoumbonata n. sp.
Nagao 1928
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Nagao 1928 | |||||||||
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Gastropoda
- Cassidae
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? Galeodea sp.
Link 1807
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Nagao 1928 | |||||||||
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Gastropoda
- Neogastropoda
- Volutidae
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? Volutilithes sp.
Swainson 1829
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Nagao 1928 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 33.4° North, 130.7° East (view map) |
| Paleocoordinates: | 39.9° North, 126.6° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Rupelian | ||
| Age range of interval: | 33.90000 - 27.82000 m.y. ago |
Stratigraphy
| Geological group: | Ashiya | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Lowest part of the Ashiya Group. Lower Ashiya Group is early Oligocene (CP18 nannoplankton zone) according to Ozaki et al. (1993). | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collectors: | M. Kato, T. Nagao |
Metadata
| Database number: | 179892 | ||
| Authorizer: | M. Clapham, M. Uhen | Enterer: | M. Clapham, M. Uhen |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2016-07-03 18:18:50 | Last modified: | 2019-10-09 15:43:47 |
| Access level: | the public | Released: | 2016-07-03 18:18:50 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59682. | S. Shimizu. 1926. On two species of Nautiloidea from the Tertiary of Japan. Science Reports of the Tohoku Imperial University, 2nd Series, Geology 9:25-27 [M. Clapham/M. Clapham] |
Secondary references:
| 59678 | T. Nagao. 1926. Aturia yokoyamai, nov. nom., from the Palaeogene of Kyushu. Science Reports of the Tohoku Imperial University, 2nd Series, Geology 9:29-32 [M. Clapham/M. Clapham] | |
| 61666 | T. Nagao. 1928. Palaeogene fossils of the Island of Kyushu, Japan Part II. Science Reports of the Tohoku Imperial University 12(1):11-140 [M. Uhen/B. Shipps/M. Uhen] |