Nakajima: Tortonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Cetacea
1 specimen
Osteichthyes - Carnivora - Desmatophocidae
Miyazaki et al. 1995 1 specimen
see common names

Geography
Country:Japan State/province:Gunma
Coordinates: 36.3° North, 139.0° East (view map)
Paleocoordinates:36.0° North, 136.7° East (Wright 2013)
Basis of coordinate:estimated from map
Time
Period: Neogene Epoch: Miocene
Stage: Tortonian 10 m.y. bin: Cenozoic 6
Key time interval: Tortonian
Age range of interval: 11.63 - 7.246 m.y. ago
Stratigraphy
Geological group:Tomioka Formation:Haraichi Member:Bed 1
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: not reported
Environment:coastal indet.
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Also known as:Yoshii
Database number:56951
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2005-11-29 11:43:25 Last modified:2025-04-25 15:20:46
Access level:the public Released:2005-11-29 11:43:25
Creative Commons license:CC0
Reference information

Primary reference:
15356. T. Kimura and Y. Hasegawa. 2004. An outline of the Miocene cetotheres of Japan. Bulletin of the Gunma Museum of Natural History 8:79-88 [M. Uhen/M. Uhen]

Secondary references:

37937 Y. Hasegawa and T. Kimura. 2008. On the two large specimens of Paleoparadoxia (Middle Miocene) from Western Gunma Prefecture, Japan. Bulletin of the Gunma Museum of Natural History 12:15-33 [M. Uhen/M. Uhen]
25586 Y. Hasegawa, Y. Takakuwa, M. Nomura, T. Kurosawa, Y. Sudo and Y. Takayama. 2000. On occurrence of Desmostylian fossils from the Upper part of the Niwaya Formation, Tomioka Group (Middle Miocene), Yoshii town, Gunma Prefecture, Japan. Bulletin of the Gunma Museum of Natural History 4:57-66 [M. Uhen/M. Uhen]
91876 T. Kimura and Y. Hasegawa. 2021. Second report on the new material of Joumocetus shimizui from the Miocene Haraichi Formation, Annaka Group, Gunma, Japan. Bulletin of the Gunma Museum of Natural History 25:59-64 [M. Uhen/M. Uhen]
55797 K. Matsui and S. Kawabe. 2015. The Oldest Record of Paleoparadoxia from the Northwest Pacific with an Implication on the Early Evolution of Paleoparadoxiinae (Mammalia: Desmostylia). Paleontological Research 19(3):251-265 [M. Uhen/M. Uhen]
16986 S. Miyazaki, H. Horikawa, N. Kohno, K. Hirota, M. Kimura, Y. Hasegawa, Y. Tomida, L. G. Barnes, and C. E. Ray. 1995. Summary of the fossil record of pinnipeds of Japan, and comparisons with that from the eastern North Pacific. The Island Arc 3:361-372 [M. Uhen/M. Uhen]