Locality 16, Urakawa: Middle Campanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Tetragonitidae
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Tetragonites popetensis
Yabe 1903
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| (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 42.2° North, 142.8° East (view map) |
| Paleocoordinates: | 47.1° North, 140.5° East (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Middle Campanian | Ammonoid zone: | Metaplacenticeras subtilistriatum |
| Age range of interval: | 83.6 - 72.2 m.y. ago |
Stratigraphy
| Formation: | Chinomigawa | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Unit U4. Float concretions. | |||||
Lithology and environment
| Primary lithology: | concretionary lithified sandy mudstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float) |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: National Museum of Nature and Science, Tsukuba (NMNS) | |
Metadata
| Database number: | 181924 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-10-08 10:19:13 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2016-10-08 10:19:13 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 60510. | Y. Shigeta, M. Izukura, T. Nishimura and Y. Tsutsumi. 2016. Middle and late Campanian (Late Cretaceous) ammonoids from the Urakawa area, Hokkaido, northern Japan. Paleontological Research 20:322-366 [M. Clapham/M. Clapham] |