Southwest of Hoshio Pass: Piacenzian, Japan
collected by T. Koshimizu
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Insecta
- Coleoptera
- Tenebrionidae
|
||||||||||
| 1 specimen | ||||||||||
| SSG-KOTAC11946 (1 measurement) | ||||||||||
| 1 specimen | ||||||||||
| SSG-KOTAC11945 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 36.2° North, 138.6° East (view map) |
| Paleocoordinates: | 43.8° North, 138.9° East (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| Stage: | Piacenzian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Piacenzian | ||
| Age range of interval: | 3.6 - 2.58 m.y. ago |
Stratigraphy
| Formation: | Motojuku | Member: | Kabutoiwa | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Previously, the geologic age of the member was indicated as Miocene (Motojuku Collaborative Research Group, 1970). Sato (2007) used a fresh basaltic andesite composition from the Arafune Lava in the Mt. Kabutoiwa area and the sample was dated at 3.4 ± 0.2 Ma by the K-Ar method. This result indicates that volcanism in the Motojuku caldera lasted until late Pliocene and the age of the Kabutoiwa Member is confirmed to be late Pliocene (early Piacenzian) near 3.5 Ma. | |||||
Lithology and environment
| Primary lithology: | lithified mudstone |
| Environment: | crater lake |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collectors: | T. Koshimizu |
Metadata
| Database number: | 222726 | ||
| Authorizer: | C. Schweitzer, M. Clapham | Enterer: | C. Schweitzer, M. Clapham |
| Modifier: | M. Clapham | Research group: | paleoentomology |
| Created: | 2021-10-22 09:57:53 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2021-10-22 09:57:53 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 87999. | M. V. Nabozhenko and T. Tanaka. 2023. Species of the genus Lagria Fabricius, 1775 from Kabutoiwa Member in Central Japan - the first fossil darkling beetles (Coleoptera: Tenebrionidae: Lagriinae) from the Pliocene. Paleontological Research 28:166-173 [M. Clapham/M. Clapham] |
Secondary references:
| 78395 | C. E. Schweitzer, R. M. Feldmann, and H. Karasawa. 2018. Systematic descriptions: Superfamily Carpilioidea. Treatise Online - Part R, Revised, Volume 1, Chapter 8T2 112:1-22 [C. Schweitzer/C. Schweitzer/M. Clapham] |