PBDB Collection

Oragahama (Pliocene of Japan)

Where: Japan (37.4° N, 141.0° E: paleocoordinates 37.9° N, 140.5° E)

• coordinate estimated from map

When: Daineji Formation (Sendai Group), Piacenzian (3.6 - 2.6 Ma)

Environment/lithology: coastal; pebbly sandstone

Size class: macrofossils

Primary reference: N. Kohno and Y. Yanagisawa. 1997. The first record of the Pliocene Gilmore fur seal in the western North Pacific Ocean. Bulletin of the National Science Museum Tokyo, Series C 23(3, 4):119-130 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 101907: authorized by Mark Uhen, entered by Mark Uhen on 05.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Adoneis pacifica, Aulaosira sp., Nitzshia fossilis, Nitzshia grunowii, Nitzshia reinholdii Adoneis pacifica Aulaosira sp. Nitzshia fossilis Nitzshia grunowii Nitzshia reinholdii
Mammalia
Carnivora - Otariidae	Callorhinus gilmorei Callorhinus gilmorei Berta and Deméré 1986 fur seal
unclassified
-	Mollusca indet. Mollusca indet. Linnaeus 1758
Bacillariophyceae
Bacillariales - Bacillariaceae	Neodenticula koizumii, Neodenticula sp. Neodenticula koizumii diatom Neodenticula sp. Akiba and Yanagisawa 1985 diatom sp. A
Rhaphoneidales - Rhaphoneidaceae	Delphineis surirella Delphineis surirella diatom
Thalassiosirales - Thalassiosiraceae	Thalassiosira antique, Thalassiosira convexa, Thalassiosira gravida, Thalassiosira nidulus, Thalassiosira oestrupii, Thalassiosira trifulta, Thalassiosira sp. Thalassiosira antique diatom Thalassiosira convexa diatom var. aspinosa Thalassiosira gravida diatom Thalassiosira nidulus diatom Thalassiosira oestrupii diatom Thalassiosira trifulta diatom Thalassiosira sp. Cleve 1873 diatom
Cymatosirales - Cymatosiraceae	Cymatosira debyi Cymatosira debyi diatom
Rhizosoleniales - Rhizosoleniaceae	Proboscia barboi Proboscia barboi diatom
Paraliales - Paraliaceae	Paralia sulcata Paralia sulcata Ehrenberg 1838 diatom
Paraliales - Pseudopodosiraceae	Pseudopodosira elegans Pseudopodosira elegans diatom
- Hemidiscaceae	Actinocyclus curvatulus, Actinocyclus ochotensis, Actinocyclus octonarius, Azpeitia nodulifera, Azpeitia tabularis Actinocyclus curvatulus diatom Actinocyclus ochotensis diatom Actinocyclus octonarius Ehrenberg 1838 diatom Azpeitia nodulifera diatom Azpeitia tabularis diatom
Melosirales - Hyalodiscaceae	Hyalodiscus obsoletus Hyalodiscus obsoletus diatom
Melosirales - Stephanopyxidaceae	Stephanopyxis dimorpha, Stephanopyxis horidus, Stephanopyxis turris Stephanopyxis dimorpha diatom Stephanopyxis horidus diatom Stephanopyxis turris Greville and Arnot 1857 diatom
Melosirales - Melosiraceae	Melosira albicans Melosira albicans diatom
Thalassionematales - Thalassionemataceae	Thalassiothrix longissima, Thalassionema nitzschioides Thalassiothrix longissima Cleve and Grunow 1880 diatom Thalassionema nitzschioides diatom
Achnanthales - Cocconeidaceae	Cocconeis scutellum, Cocconeis vitrea Cocconeis scutellum diatom Cocconeis vitrea diatom
Coscinodiscales - Coscinodiscaceae	Coscinodiscus radiatus, Coscinodiscus marginatus Coscinodiscus radiatus Ehrenberg 1841 diatom Coscinodiscus marginatus Ehrenberg 1839 diatom
Coscinodiscales - Heliopeltaceae	Actinoptychus senarius Actinoptychus senarius Ehrenberg 1838 diatom
Odontella
- Triceratiaceae	Odontella aurita Odontella aurita
Mediophyceae
Stephanodiscales - Thalassiosirophycidae	Cyclotella striata Cyclotella striata