Roadcut near Route 299, Sebayashi: Early Barremian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Malacostraca
- Decapoda
- Nephropidae
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 36.1° North, 138.8° East (view map) |
| Paleocoordinates: | 45.5° North, 147.4° East (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Barremian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Early Barremian | ||
| Age range of interval: | 125.77 - 121.4 m.y. ago |
Stratigraphy
| Formation: | Ishido | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: On the basis of occurrences of such ammonites as Pulchellia ishidoensis, Shasticrioceras sp., aff. S. patricki, and Barremites (B.) difficilis, the geologic age of the formation is considered to be the Barremian (Matsukawa, 1988; Toshimitsu and Hirano, 2000) [specifically, Early Barremian] | |||||
Lithology and environment
| Primary lithology: | lithified sandy mudstone |
| Lithology description: sandy mudstone | |
| Environment: | coastal indet. |
| Geology comments: Described as shallow marine environment | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Kanna Town Dinosaur Center (NDC: 51-2 Kagahara, Kanna-machi, Gunma 370-1602), Gunma Museum of Natural History (GMNH: 1674-1, Kamikuroiwa, Tomioka, Gunma 370-2345) | |
Metadata
| Database number: | 235331 | ||
| Authorizer: | M. Clapham | Enterer: | A. Dalal |
| Modifier: | M. Clapham | Research group: | decapod,marine invertebrate |
| Created: | 2024-06-28 13:43:33 | Last modified: | 2025-12-19 13:05:59 |
| Access level: | the public | Released: | 2024-06-28 13:43:33 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 46968. | H. Kato and H. Karasawa. 2006. New nephropid and glypheid lobsters from the Mesozoic of Japan. Boletín de la Sociedad Geológica Mexicana 23:338-343 [C. Schweitzer/E. Johnson/M. Clapham] |