Upper Obirashibe River: Middle Turonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Scaphitidae
Cephalopoda - Ammonitida - Nostoceratidae
Cephalopoda
Naefia matsumotoi Hirano 1991
Bivalvia - Myalinida - Inoceramidae
Inoceramus hobetsensis Nagao and Matsumoto 1939
see common names

Geography
Country:Japan
Coordinates: 44.1° North, 142.0° East (view map)
Paleocoordinates:51.7° North, 141.8° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Turonian 10 m.y. bin: Cretaceous 6
Key time interval: Middle Turonian
Age range of interval: 93.9 - 89.8 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: Mapped as Cenomanian but boulder is of Turonian age based on the presence of Otoscaphites puerculus, Eubostrychoceras japonicum, Inoceramus hobetsensis.
Lithology and environment
Primary lithology: lithified "siliciclastic"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:212917
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2020-08-22 23:38:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2020-08-22 23:38:47
Creative Commons license:CC0
Reference information

Primary reference:
73522. H. Hayakawa and T. Takahashi. 1993. Turonian coleoid Naefia matsumotoi from Tappu area, Hokkaido and its taphonomical significance. Fossils 54:61-65 [M. Clapham/M. Clapham]