Sen-an District: Early Miocene, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Osteichthyes
- Proboscidea
- Stegodontidae
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Stegolophodon miyokoae n. sp.
Hatai 1959
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | Japan | State/province: | Miyagi | County: | Sen-An |
| Coordinates: | 35.4° North, 134.2° East (view map) | ||||
| Paleocoordinates: | 35.2° North, 131.3° East (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| *Period: | Late/Upper Tertiary | *Epoch: | Early/Lower Miocene |
| Key time interval: | Early Miocene | Other zone: | Crucidenticula sawamurae A |
| Age range of interval: | 23.04 - 15.98 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Tsukinoki | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Diatom zone from Saegusa 2008. | |||||
Lithology and environment
| Primary lithology: | conglomeratic sandstone |
| Secondary lithology: | volcaniclastic sandstone |
| Includes fossils? | Y |
| Lithology description: "...coarse-grained, ill-sorted, tuffaceous sandstone intercalating petrified drift woods...in the middle part, and ill-sorted pebble size conglomerate in the lower part...and in the exposed lower part of the cliff breccia tuff, medium to coarse grained sandstone and carbonaceous silty tuff." | |
| Environment: | terrestrial indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float),field collection |
| Collection size: | 1 specimens |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 13454 | ||
| Authorizer: | W. Clyde | Enterer: | J. Finarelli |
| Modifier: | P. Wagner | Research group: | vertebrate |
| Created: | 2002-03-27 11:51:02 | Last modified: | 2025-08-10 22:14:41 |
| Access level: | the public | Released: | 2002-03-27 11:51:02 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 6076. | 5% 42500 | K. Hatai. 1959. Discovery of a Miocene elephant molar from the Sen-an district, Miyagi Prefecture, northeast Japan. Saito Ho-an Kai Museum Research Bulletin 28:1-4 [W. Clyde/J. Finarelli/J. Alroy] |
Secondary references:
| 31889 | H. Saegusa. 2008. Dwarf Stegolophodon from the Miocene of Japan Passengers on sinking boats. Quaternary International 182:49-62 [M. Uhen/M. Kanojia/M. Uhen] |