Aso: Langhian - Serravallian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neogastropoda - Buccinidae
Chrysodomus modestus
Buccinum sp. Linnaeus 1758
sinnanoensis?
Gastropoda - Neogastropoda - Nassariidae
Nassarius nakamurai
Bivalvia - Arcida - Arcidae
Anadara amicula
Anadara cf. setoensis
Bivalvia - Arcida - Glycymerididae
Glycymeris yamasakii
Bivalvia - Lucinida - Lucinidae
Lucina acutilineata Conrad 1849
recombined as Lucinoma acutilineata
Bivalvia - Cardiida - Veneridae
Macrocallista pacifica
Dosinia cf. angulosa
Mammalia - Cetacea
Cetacea indet. Brisson 1762
Mammalia - Carnivora - Desmatophocidae
Allodesmus kernensis Kellogg 1922
Kohno et al. 2007
Eumetopias sinanoensis Nagao 1941
1 specimen
recombined as Allodesmus sinanoensis
see common names

Geography
Country:Japan State/province:Nagano
Coordinates: 36.3° North, 138.0° East (view map)
Paleocoordinates:39.0° North, 135.4° East
Basis of coordinate:stated in text
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Langhian - Serravallian
Age range of interval:15.97000 - 11.62000 m.y. ago
Stratigraphy
Formation:Aoki Member:Bessho
Stratigraphy comments: Bessho Bed, originally reported to be Langhian; Middle Miocene, ca 14 Ma
Langhian to Serravallian according to Kohno et al. 2007
Lithology and environment
Primary lithology: "shale"
Includes fossils?Y
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:Sittako, Matsumoto
Database number:59179
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2006-03-20 13:12:06 Last modified:2021-06-02 10:16:18
Access level:the public Released:2006-03-20 13:12:06
Creative Commons license:CC BY
Reference information

Primary reference:

34447. T. Nagao. 1941. An occurrence of a fossil sea lion in the Miocene deposits of Sinano, Japan. Journal of the Faculty of Science, Hokkaido Imperial University. Series 4, Geology and Mineralogy 6(2):75-84 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

16919 L. G. Barnes and K. Hirota. 1995. Miocene pinnipeds of the otariid subfamily Allodesminae in the North Pacific Ocean: Systematics and relationships. The Island Arc 3:329-360 [M. Uhen/M. Uhen]
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]
76975 N. Kohno, H. Koike, and K. Narita. 2007. Outline of fossil marine mammals from the Middle Miocene Bessho and Aoki Formations, Nagano Prefecture, Japan. Research Report of the Shinshushinmachi Fossil Museum 10:1-45 [M. Uhen/M. Uhen]
16737 E. D. Mitchell. 1968. The Mio-Pliocene pinniped Imagotaria. Journal of the Fisheries Research Board of Canada 25(9):1843-1900 [M. Uhen/M. Uhen/M. Uhen]
76950 W. Tonomori, S. Kawano, K. Otsua and H. Hayashi. 2021. Report of an allodesmine humerus from Shimane, Japan: summary of Japanese allodesmines. Historical Biology [M. Uhen/M. Uhen]