North of Doiban, Monobe-mura: Early Aptian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Venerida
- Veneridae
|
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 33.6° North, 133.7° East (view map) |
| Paleocoordinates: | 40.7° North, 144.4° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Barremian | ||
| Key time interval: | Early Aptian | ||
| Age range of interval: | 121.4 - 119.57 m.y. ago |
Stratigraphy
| Formation: | Hibihara | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: basal part of the formation | |||||
Lithology and environment
| Primary lithology: | fine lithified sandstone |
| Environment: | estuary/bay |
| Geology comments: brackish-water environment | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 275180 | ||
| Authorizer: | P. Wagner | Enterer: | P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2025-09-22 15:53:24 | Last modified: | 2025-09-22 15:53:39 |
| Access level: | the public | Released: | 2025-09-22 15:53:24 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 93090. | M. Tashiro and T. Kozai. 1989. Bivalve fossils from the type Monobegawa Group (Part 4). Research Reports of Kochi University 38:113-144 [P. Wagner/P. Wagner] |