Toyora, Dactylioceras helianthoides zone, Locality (3) Kogodani V. 13f: Early Toarcian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Myalinida - Inoceramidae
3 individuals
Cephalopoda - Ammonitida - Hildoceratidae
1 individual
see common names

Geography
Country:Japan State/province:Yamaguchi
Coordinates: 34.3° North, 131.0° East (view map)
Paleocoordinates:45.2° North, 155.7° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Jurassic Epoch: Early Jurassic
Stage: Toarcian 10 m.y. bin: Jurassic 3
Key time interval: Early Toarcian
Age range of interval: 184.2 - 182.9 m.y. ago
Stratigraphy
Geological group:Toyora Formation:Nishinakayama
Local section:(3) Kogodani V. Local bed:13f
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Locality belongs to the Dactylioceras helanthoides zone.
Lithology and environment
Primary lithology: "shale"
Environment:marine indet.
Geology comments: Lower to Middle Jurassic shallow marine (partly brackish?) clastic deposits
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Collection size:4 individuals
Reason for describing collection:paleoecologic analysis
Metadata
Database number:38220
Authorizer:M. Aberhan Enterer:S. Nurnberg
Modifier:S. Nurnberg Research group:marine invertebrate
Created:2004-04-19 08:15:46 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-04-19 08:15:46
Creative Commons license:CC0
Reference information

Primary reference:
10253. K. Tanabe. 1991. Early Jurrasic Macrofauna of the Oxygen-Depleted Epicontinental Marin Basin in the Toyora Area, West Japan. Saito Ho-on Kai Special Publication 3:147-161 [M. Aberhan/S. Nurnberg/P. Wagner]