Maizuru Zone, Heki Formation, Honshu: Carnian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Arcida - Parallelodontidae
Bivalvia - Ostreida - Pinnidae
Pinna (Pinna) sp. Linnaeus 1758
Bivalvia - Ostreida - Bakevelliidae
Bivalvia - Pectinida - Plicatulidae
Plicatula hekiensis Nakazawa 1955
Bivalvia - Pectinida - Pectinidae
Bivalvia - Unionida - Pachycardiidae
Cardinioides japonicus Kobayashi and Ichikawa 1952
Bivalvia - Carditida - Cardiniidae
Bivalvia - Poromyida - Cuspidariidae
Bivalvia - Modiomorphida - Palaeopharidae
Bivalvia - Trigoniida - Trigoniidae
see common names

Geography
Country:Japan State/province:Fukui
Coordinates: 35.5° North, 135.3° East (view map)
Paleocoordinates:17.9° North, 138.4° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period: Triassic Epoch: Late Triassic
Stage: Carnian 10 m.y. bin: Triassic 3
Key time interval: Carnian
Age range of interval: 237 - 227.3 m.y. ago
Stratigraphy
Formation:Heki
Stratigraphic resolution: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:40119
Authorizer:M. Aberhan Enterer:S. Nurnberg
Modifier:S. Nurnberg Research group:marine invertebrate
Created:2004-06-18 08:42:59 Last modified:2025-02-22 15:12:02
Access level:the public Released:2004-06-18 08:42:59
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]