Kr 2-6: Spathian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Entactinaria
- Eptingiidae
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Cryptostephanidium sp.
Dumitrica 1978
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Protozoa
- Entactinaria
- Thalassothamnidae
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Polycystinea
- Nassellaria
- Poulpidae
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Polycystinea
- Spumellaria
- Capnuchosphaeridae
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Polycystinea
- Spumellaria
- Oertlispongidae
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| see common names | |||||||
Geography
| Country: | Japan | State/province: | Aichi |
| Coordinates: | 35.5° North, 137.2° East (view map) | ||
| Paleocoordinates: | 3.5° North, 134.2° 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 | Other zone: | Parentactinia nakatsugawaensis |
| Age range of interval: | 248.6 - 247 m.y. ago |
Stratigraphy
| Local section: | Kr-2 | Local bed: | NA |
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 methods: | bulk,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 220806 | ||
| Authorizer: | W. Foster | Enterer: | W. Foster | Research group: | micropaleontology |
| Created: | 2021-06-15 13:28:39 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2021-06-15 13:28:39 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 77163. | A. Yao and K. Kuwahara. 1997. Radiolarian faunal change from Late Permian to Middle Triassic times (ぺルム紀新世から三畳紀中世にかけての放散虫群集の変遷). NOM, Spec 10:87-96 [W. Foster/W. Foster] |