Aw13, Kaka-ooji: Early Maastrichtian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus (Endocostea) shikotanensis
Nagao and Matsumoto 1940
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Cephalopoda
- Ammonitida
- Nostoceratidae
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Nostoceras cf. hetonaiense
Matsumoto 1977
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 34.3° North, 134.9° East (view map) |
| Paleocoordinates: | 40.2° North, 125.7° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Early Maastrichtian | Ammonoid zone: | Nostoceras hetonaiense |
| Age range of interval: | 72.2 - 66 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified mudstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Osaka Museum of Natural History | |
Metadata
| Database number: | 176811 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | G. Palazzo | Research group: | marine invertebrate |
| Created: | 2016-03-03 01:21:53 | Last modified: | 2026-09-14 11:58:11 |
| Access level: | the public | Released: | 2016-03-03 01:21:53 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 58337. | Y. Morozumi. 1985. Late Cretaceous (Campanian and Maastrichtian) ammonites from Awaji Island, southwest Japan. Bulletin of the Osaka Museum of Natural History 39:1-58 [M. Clapham/M. Clapham] |