Kamikinenbetsu Creek, Obira Town: Middle Turonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda
Coleoidea indet. Bather 1888
Cephalopoda - Ammonitida - Scaphitidae
Yezoites puerculus (Jimbo 1894)
Bivalvia - Myalinida - Inoceramidae
Inoceramus hobetsensis Nagao and Matsumoto 1939
see common names

Geography
Country:Japan
Coordinates: 44.0° North, 142.0° East (view map)
Paleocoordinates:51.6° North, 141.9° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
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
Geological group:Yezo Formation:Saku
Stratigraphic resolution:bed
Stratigraphy comments: The nodule that yielded the Obira specimen contains micro- and macroconchs of the scaphitid ammonite Yezoites puerculus (Jimbo, 1894) and the bivalve Inoceramus hobetsensis Nagao and Matsumoto, 1939. This nodule was presumably derived from the middle Turonian Saku Formation of the Middle Yezo Group, which yields the same molluscan assemblage.
Lithology and environment
Primary lithology:nodular lithified "siliciclastic"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Repository: University Museum, University of Tokyo (UMUT)
Metadata
Database number:212859
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2020-08-21 14:19:22 Last modified:2025-02-22 15:12:02
Access level:the public Released:2020-08-21 14:19:22
Creative Commons license:CC0
Reference information

Primary reference:
73496. K. Tanabe, Y. Hikida, and Y. Iba. 2006. Two coleoid jaws from the Upper Cretaceous of Hokkaido, Japan. Journal of Paleontology 80:138-145 [M. Clapham/M. Clapham]