new trilobite collection, boulders found between Gomi and Ishiyama villages: Ludlow, Japan
collected by Y. Sako, T. Mizobuchi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Artiopoda - Phacopida - Encrinuridae
Artiopoda - Proetida - Proetidae
see common names

Geography
Country:Japan State/province:Skikoku 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
Stratigraphy comments: Cerauroides orientalis horizon, in stage G3 (Early Ludlovian). Formation from Stocker et al. (2019).
Lithology and environment
Primary lithology: lithified "reef rocks"
Lithology description: limestone reef-breccia with red shale
Environment:reef, buildup or bioherm
Geology comments: submarine talus deposits along the outer slope of the wave resistant reef front [redeposited]
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collectors:Y. Sako, T. Mizobuchi
Metadata
Database number:188695
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:P. Wagner Research group:marine invertebrate
Created:2017-09-13 16:20:49 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-09-13 16:20:49
Creative Commons license:CC0
Reference information

Primary reference:
63330. T. Kobayashi and T. Hamada. 1985. Additional Silurian trilobites to the Yokokura-Yama fauna from Shikoku, Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 139:206-217 [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]