Maizuru Zone, Narawara Formation, Honshu: Induan - Olenekian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Ostreida - Bakevelliidae
Bivalvia - Pectinida - Claraiidae
Claraia aff. decidens (Bittner 1899)
Bivalvia - Pectinida - Hunanopectinidae
Leptochondria minima (Kiparisova 1938)
Bivalvia - Protobranchia - Malletiidae
see common names

Geography
Country:Japan State/province:Fukui
Coordinates: 35.5° North, 135.3° East (view map)
Paleocoordinates:3.9° North, 132.4° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Triassic Epoch: Early Triassic
Stage: Induan - Olenekian 10 m.y. bin: Triassic 1
Key time interval: Induan - Olenekian
Age range of interval: 251.902 - 247 m.y. ago
Stratigraphy
Geological group:Yakuno Formation:Narawara
Stratigraphic resolution:formation
Stratigraphy comments: Skytian
Lithology and environment
Primary lithology: "siliciclastic"
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:39973
Authorizer:M. Aberhan Enterer:S. Nurnberg
Modifier:S. Nurnberg Research group:marine invertebrate
Subset of collection #:40107
Created:2004-06-13 05:35:10 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-06-13 05:35:10
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]