Bed of Natori River at Kita-Akaishi: Langhian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Terebratulida
- Terebrataliidae
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Coptothyris grayi
(Davidson 1852)
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 38.2° North, 140.8° East (view map) |
| Paleocoordinates: | 38.1° North, 138.1° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Langhian | ||
| Age range of interval: | 15.98 - 13.82 m.y. ago |
Stratigraphy
| Formation: | Moniwa | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Basal part of the formation. Moniwa Formation ranges from 16-15 Ma, according to Ogasawara (1994). | |||||
Lithology and environment
| Primary lithology: | very coarse,pebbly,shelly/skeletal poorly lithified sandstone |
| Lithology description: Described as "impure limestone" by Hatai but the Coptothyris assemblages are in pebbly-granule coarse sandstones, partly with impure limestone, according to Sato (1991). It is likely that the impure limestone are more shell-rich intervals of the sandstone. | |
| Environment: | shoreface |
| Geology comments: Interpreted as tidal zone to shallow marine, gravelly and rocky bottom by Sato (1991) | |
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 (IGPS), Tohoku University | |
Metadata
| Database number: | 203322 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2019-08-09 17:59:14 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2019-08-09 17:59:14 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 69723. | K. Hatai, K. Masuda, and H. Noda. 1973. Marine fossils from the Moniwa Formation distributed along the Natori River, Sendai, northeast Honshu, Japan, part 1. Brachiopoda from the Moniwa Formation. Saito Ho-on Kai Museum Research Bulletin 42:9-19 [M. Clapham/M. Clapham] |