Hanawa, Yamamoto-gun: Middle Pleistocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella saishuensis
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Bivalvia
- Cardiida
- Cardiidae
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Cardium muticum
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Bivalvia
- Carditida
- Carditidae
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Venericardia ferruginea
(Clessin 1888)
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Bivalvia
- Carditida
- Astartidae
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Astarte alaskensis
Dall 1903
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| synonym of Astarte elliptica | |||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Arca boucardi
Jousseaume 1894
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| recombined as Tetrarca boucardi | |||||||
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Bivalvia
- Arcida
- Limopsidae
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Limopsis azumana
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Rhynchonellata
- Rhynchonellida
- Hemithirididae
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Hemithyris psittacea
(Gmelin 1790)
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Rhynchonellata
- Terebratulida
- Dallinidae
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Nipponithyris yabei
Hatai 1939
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Rhynchonellata
- Terebratulida
- Laqueidae
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Laqueus japonicus
Yabe and Hatai 1934
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Laqueus rubellus
(Sowerby 1846)
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Laqueus hanawensis
Hayasaka 1929
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Rhynchonellata
- Terebratulida
- Terebrataliidae
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Terebratalia asanoi
Nomura and Hatai 1936
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Terebratalia gouldii
(Dall 1891)
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Terebratalia hayasakai
Hatai 1939
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Terebratalia coreanica
(Adams and Reeve 1850)
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Terebratalia bialata
Nomura and Hatai 1936
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Terebratalia pacifica
Hatai 1936
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Rhynchonellata
- Terebratulida
- Cancellothyrididae
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Terebratulina hanawensis
Hatai 1939
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Terebratulina crossei
Davidson 1882
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Terebratulina yabei
Nomura and Hatai 1936
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 40.3° North, 140.1° East (view map) |
| Paleocoordinates: | 40.3° North, 140.1° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Quaternary | Epoch: | Pleistocene |
| Stage: | Chibanian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Middle Pleistocene | ||
| Age range of interval: | 0.77400 - 0.12900 m.y. ago |
Stratigraphy
| Formation: | Wakimoto | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Fossils come from the upper part of the beds underlying the Sandy shale beds. The stratigraphy includes the "Gray shale beds" overlain by the "Alternation of sandstone and shale beds" and then the "Sandy shale beds." The "Alternation of sandstone and shale beds" likely corresponds to the Wakimoto beds as proposed by S. Toyama. Wakimoto Formation is Middle Pleistocene age (Ozawa & Kamiya, 2005). | |||||
Lithology and environment
| Primary lithology: | coarse poorly lithified sandstone |
| Lithology description: Gray to brownish colored compact, coarse grained sandstone or a fine grained conglomeratic sandstone bed | |
| Environment: | offshore |
| Geology comments: Water depths of "50-80 fathoms" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Institute of Geology and Paleontology, Tohoku University, Sendai (IGPS) | |
Metadata
| Database number: | 190675 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2017-12-13 23:31:17 | Last modified: | 2017-12-15 23:37:24 |
| Access level: | the public | Released: | 2017-12-13 23:31:17 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 64049. | K. M. Hatai. 1940. The Cenozoic Brachiopoda of Japan. Science Reports, Tohoku Imperial University, Series 2 20:1-413 [M. Clapham/M. Clapham] |