Pombets river, Ikushumbets area: Late Turonian, Japan
collected by Jimbo

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Scaphitidae
Olcostephanus sp. in Jimbo, 1894; Yezoites perrini in Yabe 1910
see common names

Geography
Country:Japan
Coordinates: 43.3° North, 142.0° East (view map)
Paleocoordinates:50.9° North, 142.2° 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: Late Turonian
Age range of interval: 93.9 - 89.8 m.y. ago
Stratigraphy
Formation:Kashima
Stratigraphic resolution:bed
Stratigraphy comments: Found in a dark gray sandy silty nodule and retains a white-colored shell wall. Based on this fact, Matsumoto (1963, p. 46) suggested that this specimen came from the upper Turonian sandy siltstone beds that are exposed in the lower stream of the Pombetsu River.
Lithology and environment
Primary lithology:gray lithified sandy siltstone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:Jimbo
Collection method comments: Repository: University Museum, the University of Tokyo (UMUT)
Metadata
Database number:226948
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2022-08-13 11:50:18 Last modified:2025-02-22 15:12:02
Access level:the public Released:2022-08-13 11:50:18
Creative Commons license:CC0
Reference information

Primary reference:
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]