Ki607, Roku-no-sawa stream: Early Coniacian, Japan
collected by M. Futakami

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Collignoniceratidae
see common names

Geography
Country:Japan
Coordinates: 43.3° North, 142.0° East (view map)
Paleocoordinates:51.3° North, 139.5° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Coniacian 10 m.y. bin: Cretaceous 6
Key time interval: Early Coniacian Inoceramid zone:  Inoceramus uwajimensis
Age range of interval: 89.8 - 85.7 m.y. ago
Stratigraphy
Geological group:Yezo
Stratigraphic resolution:bed
Stratigraphy comments: Lower part of Member U2, lower part of the Upper Yezo Group. This stratigraphic position is assigned to the Inoceramus uwajimensis Zone, Therefore, the age is probably early to middle (?) Coniacian.
Lithology and environment
Primary lithology:nodular,gray lithified sandy siltstone
Lithology description: Calcareous nodule in dark grey 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:M. Futakami
Collection method comments: Repository: National Science Museum, Tokyo
Metadata
Database number:181019
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2016-08-13 22:52:18 Last modified:2025-02-22 15:12:02
Access level:the public Released:2016-08-13 22:52:18
Creative Commons license:CC0
Reference information

Primary reference:
60111. M. Futakami. 1991. Coniacian collignoniceratid ammonites from Hokkaido. Journal of Kawamura Gakuen Woman's University 2:257-275 [M. Clapham/M. Clapham/M. Clapham]