Locality H4000, Kotanbetsu River: Late Santonian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
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Naefia matsumotoi
Hirano 1991
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 44.2° North, 142.0° East (view map) |
| Paleocoordinates: | 52.3° North, 136.2° East (Wright 2013) |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Late Santonian | Inoceramid zone: | Inoceramus amakusensis |
| Age range of interval: | 85.7 - 83.6 m.y. ago |
Stratigraphy
| Geological group: | Yezo | Formation: | Haborogawa | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Middle Upper Haborogawa Formation, Upper Yezo Group, uppermost part of the Inoceramus amakusensis Zone of Late Santonian age. | |||||
Lithology and environment
| Primary lithology: | lithified sandstone |
| Environment: | transition zone/lower shoreface |
| Geology comments: Locality K1012 contains hummocky cross-stratified sandstone | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: UMUT, University Museum, University of Tokyo | |
Metadata
| Database number: | 212925 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2020-08-22 23:47:41 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2020-08-22 23:47:41 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 73521. | D. Fuchs and K. Tanabe. 2010. Re-investigation of the shell morphology and ultrastructure of the Late Cretaceous spirulid coleoid Naefia matsumotoi. In K. Tanabe, Y. Shigeta, T. Sasaki, H. Hirano (eds.), Cephalopods - Past and Present 195-207 [M. Clapham/M. Clapham] |