KF212, Matashirosawa Valley, Shigejisawa Valley, Kamiyasse, Miyagi Prefecture: Roadian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Productida
- Lyttoniidae
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| (7 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan |
| Coordinates: | 39.0° North, 141.5° East (view map) |
| Paleocoordinates: | 10.3° North, 138.6° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Roadian | 10 m.y. bin: | Permian 3 |
| Key time interval: | Roadian | Foram zone: | Monodiexodina kofuganensis |
| Age range of interval: | 274.4 - 266.9 m.y. ago |
Stratigraphy
| Geological group: | Kanokura | Formation: | Hoso-o | Member: | Unit 1 |
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Flick & Shiino (2021 txt. f. 2) give it as Wordian, but this is likely incorrect. KF212 is in the lowest KN1 member of the Kanokura Formation, assigned to the Monodiexodina kofuganensis zone. Based on the presence of Chusenella and Cancellina, the zone is likely no younger than Roadian. PJW: Note: KF212 is called a locality, but it appears to be a section rather than a single bed or group of beds. This collection apparently is from lower in the section in the Roadian beds. Also, "Kanokura" is now a series name and rocks formerly assigned to it now are assigned to multiple formations. | |||||
Lithology and environment
| Primary lithology: | gray lithified "shale" |
| Lithology description: Dark gray shale; | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 118920 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2011-10-18 13:36:48 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2011-10-18 13:36:48 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 33718. | J. Tazawa and Y. Takaizumi. 1987. Poikilosakos (Oldhaminidina, Brachiopoda) from the Permian of northeast Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 145:10-15 [M. Clapham/M. Clapham] |