cephalopods unit, Gomi Quarry: Ludlow, Japan
collected by Y. Sako, T. Mizobuchi

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Orthocerida - Orthoceratoidea
? Michelinoceras sp. Foerste 1932
Cephalopoda - Dissidocerida - Orthoceratoidea
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
Stratigraphy comments: Cerauroides orientalis horizon, in stage G3 (Early Ludlovian)
Lithology and environment
Primary lithology: lithified "reef rocks"
Secondary lithology:red lithified "shale"
Includes fossils?Y
Lithology description: limestone 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:field collection
Reason for describing collection:taxonomic analysis
Collectors:Y. Sako, T. Mizobuchi
Metadata
Database number:188691
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:M. Hopkins Research group:marine invertebrate
Created:2017-09-13 15:50:37 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-09-13 15:50:37
Creative Commons license:CC0
Reference information

Primary reference:
63325. T. Kobayashi, J. Katto, and T. Hamada. 1984. New observations of Shiroishi-ohsawa, Mt. Yokokura, Kochi Prefecture with palaeontological studies on the cephalopods and trilobites from the locality. Research Report of the Kochi University 32:235-258 [M. Hopkins/M. Hopkins]