Osawa, upper Osawa Fm, Motoyoshi-cho, Motoyoshi-gun, Miyagi Prefecture: Spathian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Pectinida
- Hunanopectinidae
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 38.8° North, 141.5° East (view map) |
| Paleocoordinates: | 4.9° North, 138.8° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.6 - 247 m.y. ago |
Stratigraphy
| Formation: | Osawa | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Middle and upper parts of Osawa Formation | |||||
Lithology and environment
| Primary lithology: | black lithified "shale" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 113888 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2011-08-06 15:25:56 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2011-08-06 15:25:56 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 33620. | M. Murata. 1973. Triassic fossils from the Kitakami Massif, northeast Japan, Part 1, Pelecypods and Brachiopods of the Osawa and the Fukkoshi Formations. Science Reports of the Tohoku University. Second Series, Geology. Special Volume (Hatai Memorial Volume) 6:267-275 [M. Clapham/M. Clapham/M. Clapham] |