Annaka City: Middle Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Lamniformes
- Otodontidae
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Carcharocles megalodon
(Agassiz 1835)
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| recombined as Otodus megalodon | ||||||||||
| 27 individual teeth. 21 teeth show good preservation, 11 teeth found in situ, 14 teeth from the original rock material | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Gunma |
| Coordinates: | 36.3° North, 138.9° East (view map) | ||
| Paleocoordinates: | 39.0° North, 136.4° East | ||
| Basis of coordinate: | based on political unit |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98000 - 11.63000 m.y. ago |
Lithology and environment
| Primary lithology: | siltstone |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some genera |
Metadata
| Database number: | 161520 | ||
| Authorizer: | C. Jaramillo | Enterer: | C. Pimiento |
| Created: | 2014-09-07 12:54:14 | Last modified: | 2014-09-07 12:54:14 |
| Access level: | the public | Released: | 2014-09-07 12:54:14 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 52628. | M. Goto, F. Kobayashi, and S. Osawa. 1983. On a dentition of giant extinct shark, Carcharodon megalodon, from Annaka City, Gumma Prefecture, Japan (Preliminary report). Journal of the Geological Society of Japan 89(10):597-598 [C. Jaramillo/C. Pimiento/C. Pimiento] |