Ogamata Formation: Spathian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Entactinaria
- Thalassothamnidae
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Protozoa
- Entactinaria
- Palaeoscenidiidae
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Parentactinia nakatsugawaensis
Sashida 1983
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Polycystinea
- Nassellaria
- Archaeosemantidae
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| see common names | |||||||
Geography
| Country: | Japan | State/province: | Honshu |
| Coordinates: | 36.0° North, 138.5° East (view map) | ||
| Paleocoordinates: | 3.5° North, 135.4° East (Wright 2013) | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.6 - 247 m.y. ago |
Stratigraphy
| Formation: | Ogmata |
Lithology and environment
| Primary lithology: | chert |
| Environment: | basinal (siliceous) |
Taphonomy
| Modes of preservation: | body,original silica |
| Size of fossils: | microfossils |
Collection methods and comments
| Collection excludes: | all microfossils |
| Collection methods: | bulk,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 220601 | ||
| Authorizer: | W. Foster | Enterer: | W. Foster | Research group: | micropaleontology |
| Created: | 2021-06-11 02:52:04 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2021-06-11 02:52:04 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 77110. | K. Sashida. 1983. Lower Triassic radiolaria from the Kanto Mountains, central Japan Part 1: Palaeoscenidiidae. Trans Proc. Palaeont. Soc. Japan 131:168-176 [W. Foster/W. Foster/W. Foster] |