Mt. Kinshozan, middle-upper Member, Akasaka (KPM collection): Wordian - Capitanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda
- Dentaliida
- Prodentaliidae
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Prodentalium akasakensis
(Hayasaka 1925)
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see common names |
Geography
Country: | Japan |
Coordinates: | 35.4° North, 136.6° East (view map) |
Paleocoordinates: | 22.8° North, 110.2° East |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Permian | Epoch: | Guadalupian |
Stage: | Wordian - Capitanian | 10 m.y. bin: | Permian 4 |
Key time interval: | Wordian - Capitanian | ||
Age range of interval: | 266.9 - 259.51 m.y. ago |
Stratigraphy
Formation: | Akasaka | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: All the specimens used in this study are in the collections of three museums and two institutions; no information is available about their stratigraphic level in the Akasaka Limestone. However, they are all associated with a black muddy limestone matrix, and it is reasonably assumed that they were derived from either the middle or upper members. |
Lithology and environment
Primary lithology: | black lithified "limestone" |
Environment: | lagoonal/restricted shallow subtidal |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | survey of museum collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: Repository: KPM (not stated, but presumably Kanagawa Prefectural Museum of Natural History, Odawara) |
Metadata
Database number: | 220707 | ||
Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
Created: | 2021-06-13 22:27:21 | Last modified: | 2021-06-13 22:27:21 |
Access level: | the public | Released: | 2021-06-13 22:27:21 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
77134. | K. Asato and T. Kase. 2021. Gigantic scaphopods (Mollusca) from the Permian Akasaka Limestone, central Japan. Journal of Paleontology 95:748-762 [M. Clapham/M. Clapham] |