Itsukaichi Area, Kochigatani Group, Honshu: Norian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Monotidae
see common names

Geography
Country:Japan State/province:Tokyo
Coordinates: 35.7° North, 139.2° East (view map)
Paleocoordinates:41.8° North, 152.4° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Triassic Epoch: Late Triassic
Stage: Norian 10 m.y. bin: Triassic 4
Key time interval: Norian
Age range of interval: 227.3 - 205.7 m.y. ago
Stratigraphy
Geological group:Kochigatani Formation:Umegatani
Stratigraphic resolution:formation
Stratigraphy comments: upper part of Kochigatani Group. PJW: Upper part is now the Umegatani formation.
Lithology and environment
Primary lithology: sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:cast,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:39836
Authorizer:M. Aberhan Enterer:S. Nurnberg
Modifier:P. Wagner Research group:marine invertebrate
Created:2004-06-08 13:07:53 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-06-08 13:07:53
Creative Commons license:CC0
Reference information

Primary reference:
10664. I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg]