Upper course of Suribachi-zawa River: Early Cenomanian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Desmoceratidae
(4 measurements)
Microdesmoceras sp. Matsumoto 1972
Cephalopoda - Ammonitida - Tetragonitidae
Cephalopoda - Ammonitida - Hamitidae
Stomohamites sp. Breistroffer 1940
see common names

Geography
Country:Japan
Coordinates: 44.2° North, 142.1° East (view map)
Paleocoordinates:50.5° North, 147.0° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:hand sample
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Cenomanian 10 m.y. bin: Cretaceous 5
Key time interval: Early Cenomanian
Age range of interval: 100.5 - 93.9 m.y. ago
Stratigraphy
Geological group:Yezo
Stratigraphic resolution:bed
Stratigraphy comments: From the My3 unit, which contains the basal Cenomanian Graysonites wooldridgei Zone and the Stoliczkaia (Lamneyella) japonica Assemblage Zone
Lithology and environment
Primary lithology:concretionary lithified mudstone
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: National Museum of Nature and Science, Tsukuba (NMNS)
Metadata
Database number:236008
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2024-09-07 21:31:41 Last modified:2025-02-22 15:12:02
Access level:the public Released:2024-09-07 21:31:41
Creative Commons license:CC0
Reference information

Primary reference:
89361. K. Yoshinaga, Y. Shigeta, and H. Maeda. 2024. Discovery of Desmoceras (Pseudouhligella) shikokuense in the lower Cenomanian of Hokkaido, Japan. Paleontological Research 28:469-480 [M. Clapham/M. Clapham]