IK1038, Ikushunbetsu River, Mikasa City: Early Turonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Scaphitidae
Scaphites planus (Yabe 1910)
see common names

Geography
Country:Japan
Coordinates: 43.2° North, 142.0° East (view map)
Paleocoordinates:50.9° North, 142.2° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Turonian 10 m.y. bin: Cretaceous 6
Key time interval: Early Turonian Ammonoid zone:  Euomphaloceras septemseriatum
Age range of interval: 93.9 - 89.8 m.y. ago
Stratigraphy
Formation:Mikasa
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Mikasa Formation, which overlies pre-Cenomanian Cretaceous deposits. AGE: Early Turonian, based on ammonite biostratigraphy. STRATIGRAPHIC POSITION: From near base of local regional section
Lithology and environment
Primary lithology: lithified sandstone
Includes fossils?Y
Lithology description: GENERAL LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Inshore to nearshore and nearshore to offshore or deeper waters.
Taphonomy
Modes of preservation:cast,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some genera,some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Tanabe et al. (1977). REPOSITORY: Dept. of Geology, Kyushu University, Japan.
Taxonomic list comments:COVERAGE: Limited to representative scaphitid ammonites. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications.
Metadata
Database number:86999
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:M. Clapham Research group:marine invertebrate
Created:2009-02-26 22:33:15 Last modified:2025-02-22 15:12:02
Access level:the public Released:2009-02-26 22:33:15
Creative Commons license:CC0
Reference information

Primary reference:
29266. K. Tanabe. 1977. Mid-Cretaceous scaphitid ammonites from Hokkaido. Palaeontological Society of Japan Special Papers 21:11-22 [A. Hendy/A. Hendy]

Secondary references:

82318 K. Tanabe. 2022. Late Cretaceous dimorphic scaphitid ammonoid genus Yezoites from the circum-North Pacific regions. Paleontological Research 26:233-269 [M. Clapham/M. Clapham]