Loc. 3. Ys 15. Gomi Quarry: Ludlow, Japan
collected by M. Hirata, J. Hamada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Artiopoda
- Phacopida
- Phacopidae
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Artiopoda
- Phacopida
- Encrinuridae
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Encrinuridae indet.
Angelin 1854
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Artiopoda
- Phacopida
- Cheiruridae
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| subgenus robustus | ||||||||||
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Cerauroides orientalis
Kobayashi and Hamada 1973
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Artiopoda
- Lichida
- Lichidae
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Artiopoda
- Proetida
- Proetidae
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| Stocker et al. 2019 | ||||||||||
| Stocker et al. 2019 | ||||||||||
| Stocker et al. 2019 | ||||||||||
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Artiopoda
- Proetida
- Tropidocoryphidae
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Artiopoda
- Corynexochida
- Styginidae
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Japonoscutellum japonicum
(Kobayashi and Hamada 1965)
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Bumastus indet.
Murchison 1839
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Microscutellum sp.
Snajdr 1960
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Shikoku | County: | Kôchi Prefecture |
| Coordinates: | 33.5° North, 133.2° East (view map) | ||||
| Paleocoordinates: | |||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Silurian | Epoch: | Ludlow |
| 10 m.y. bin: | Silurian 2 | ||
| Key time interval: | Ludlow | ||
| Age range of interval: | 426.7 - 422.7 m.y. ago |
Stratigraphy
| Formation: | Fukata | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Comprise "Ys 14" and "Ys 15" from the "G3 stage" of lower Ludlovian. Was Yokokura formation, but Stocker et al. (2019) give this as the Fukata formation. | |||||
Lithology and environment
| Primary lithology: | lithified "reef rocks" |
| Lithology description: "reef-breccia" | |
| Environment: | reef, buildup or bioherm |
| Geology comments: submarine talus deposits along outer slope of wave resistant reef front [redeposited] | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | M. Hirata, J. Hamada |
| Taxonomic list comments:Fossils include stromatoporoids, corals, brachiopods, calcareous algae, bryozoans, "pelecypods", gastropods, cephalopods, ostracods | |
Metadata
| Also known as: | Locality 8. Yokokurayama, Ochi, Kochi Prefecture, Shikoku Island | ||
| Database number: | 188690 | ||
| Authorizer: | M. Hopkins, P. Wagner | Enterer: | M. Hopkins, P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2017-09-13 13:44:22 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2017-09-13 13:44:22 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 63326. | T. Kobayashi and T. Hamada. 1974. Silurian trilobites of Japan in comparison with Asian, Pacific and other faunas. Palaeontological Society of Japan Special Papers 18:1-155 [M. Hopkins/M. Hopkins] |
Secondary references:
| 74740 | C. P. Stocker, D. J. Siveter, P. D. Lane, M. Williams, T. Oji, GTanaka, T. Komatsu, S. Wallis, D. J. Siveter and T. R. A. Vandenbroucke. 2019. The Silurian and Devonian proetid and aulacopleurid trilobites of Japan and their palaeogeographical significance . Fossils and Strata 64:205-232 [P. Wagner/P. Wagner/P. Wagner] |