Osawa River: Burdigalian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Cetacea - Squalodelphinidae
1 specimen
ICM-PV-509
see common names

Geography
Country:Japan State/province:Nagano Prefecture County:Shimoina District
Coordinates: 35.4° North, 137.8° East (view map)
Paleocoordinates:35.3° North, 135.1° East (Wright 2013)
Basis of coordinate:estimated from map
Time
Period: Neogene Epoch: Miocene
Stage: Burdigalian 10 m.y. bin: Cenozoic 5
Key time interval: Burdigalian
Age range of interval: 20.45 - 15.98 m.y. ago
Stratigraphy
Geological group:Tomikusa Formation:Onzawa
Lithology and environment
Primary lithology: not reported
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:278876
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2026-05-26 16:21:21 Last modified:2026-05-26 16:21:21
Access level:the public Released:0000-00-00 00:00:00
Creative Commons license:
Reference information

Primary reference:

94911. A. Kawatani, Y. Hasegawa, and T. Kimura. 2026. New fossil squalodelphinid from the lower Miocene Tomikusa Group, Nagano Prefecture, Japan. Fossils 119:5-11 [M. Uhen/M. Uhen]