Toyohama: Burdigalian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Cetacea
1 specimen
Kimura and Hasegawa 2022
see common names

Geography
Country:Japan State/province:Aichi
Coordinates: 34.7° North, 137.0° East (view map)
Paleocoordinates:34.6° North, 134.3° East (Wright 2013)
Basis of coordinate:stated in text
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:Morozaki Formation:Toyohama
Stratigraphy comments: Toyohama Forma- tion, Morozaki Group, lower Miocene, Burdigalian. The Toyohama Formation is correlated with the magnetic polarity zone C5Dr (18.056–17.533 Ma: Hilgen et al., 2012) (Hayashida, 1986; Ito et al., 1999). The Morozaki Group consists of Himaka, Toyohama, Yamami, and Utsumi Formations in ascending stratigraphic order (Kondo and Kimura, 1987). The holotype was found in the middle part of the Toyohama Formation (CERG, 1993). The Toyohama Formation is composed mainly of tuffaceous mudstone (Shibata, 1977).
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:taxonomic analysis
Metadata
Database number:53881
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2005-09-15 08:50:41 Last modified:2025-02-22 15:12:02
Access level:the public Released:2005-09-15 08:50:41
Creative Commons license:CC0
Reference information

Primary reference:
14504. Chita-kujira Excavation Research Group. 1993. Odontocete fossils from the Miocene Morozaki Group, Chita Peninsula, Aichi Prefecture, Central Japan. Chikyu Kagaku 47(2):153-157 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

79162 T. Kimura and Y. Hasegawa. 2022. A new physeteroid from the Lower Miocene of Japan. Paleontological Research 26(1):87-101 [M. Uhen/M. Uhen]