Shinyashiki, Obisa-mura: Early Santonian, Japan
collected by Shigeyasu Tokunaga 1922-1926

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Plesiosauria
1 specimen
Anterior cervical centrum
Cephalopoda - Ammonitida - Hamitidae
see common names

Geography
Country:Japan State/province:Futaba
Coordinates: 37.5° North, 141.0° East (view map)
Paleocoordinates:45.8° North, 138.5° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Santonian 10 m.y. bin: Cretaceous 6
Key time interval: Early Santonian
Age range of interval: 85.7 - 83.6 m.y. ago
Stratigraphy
Geological group:Futaba Formation:Tamayama
Stratigraphy comments: "Upper Futaba beds" [?= Tamayama Formation]
Lithology and environment
Primary lithology: muddy sandstone
Includes fossils?Y
Lithology description: "Shaly sandstone". "The Upper Beds, which attain a maximum thickness of 220 m, are chiefly composed of a hard coarse-grained sandstone and a conclomerate with local intercalations of shale and sandy shale".
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collectors:Shigeyasu Tokunaga Collection dates:1922-1926
Metadata
Database number:150930
Authorizer:R. Benson Enterer:R. Benson
Modifier:R. Benson Research group:vertebrate
Created:2013-09-18 00:27:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2013-09-18 00:27:47
Creative Commons license:CC0
Reference information

Primary reference:
48216. S. Tokunaga and S. Shimizu. 1926. The Cretaceous Formation of Futaba in Iwaki and its fossils. Journal of Faculty of Science, Imperial University of Tokyo, Section 2 1:181-212 [R. Benson/R. Benson]