Locality 81005, Suribachi-zawa: Early Cenomanian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Tetragonitidae
Gabbioceras yezoense in Nishida et al., 1997 (1 measurement)
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:small collection
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
Stratigraphic resolution:bed
Stratigraphy comments: Although the exact stratigraphic horizon from which the concretion came is uncertain, judging from its location, it without doubt came from the mudstone of the Member My3 of the "Middle Yezo Group," which can be correlated with the Graysonites adkinsi-G. wooldridgei zone (=lowest Cenomanian).
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: Institute of Geoscience, University of Tsukuba, Tsukuba.
Metadata
Database number:174600
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2015-11-16 23:07:09 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-11-16 23:07:09
Creative Commons license:CC0
Reference information

Primary reference:
56993. Y. Shigeta. 2013. A new species of Tanabeceras (Ammonoidea, Gaudryceratidae) from the lowest Cenomanian of Hokkaido, Japan. Paleontological Research 17:312-316 [M. Clapham/M. Clapham]