Sanjussen: Middle Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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| 1 specimen | |||||||
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Bivalvia
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| 1 specimen | |||||||
| see common names | |||||||
Geography
| Country: | Japan | State/province: | Hokkaido |
| Coordinates: | 44.6° North, 142.2° East (view map) | ||
| Paleocoordinates: | 44.5° North, 139.3° East (Wright 2013) | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Middle Miocene | ||
| Age range of interval: | 15.98 - 11.63 m.y. ago |
Stratigraphy
| Formation: | Chikubetsu |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | conglomeratic sandstone |
| Includes fossils? | Y |
| Lithology description: pebbly sandstone with abundant allochthonous bivalve shells | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 173639 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen | Research group: | vertebrate |
| Created: | 2015-10-06 09:23:03 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2015-10-06 09:23:03 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 56595. | K. Chiba, A. R. Fiorillo, L. L. Jacobs, Y. Kimura, Y. Kobayashi, N. Kohno, Y. Nishida, M. J. Polcyn, and K. Tanaka. 2016. A new desmostylian mammal from Unalaska (USA) and the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids. Historical Biology 28(1-2):289-303 [M. Uhen/M. Uhen/M. Uhen] |