Where: Japan (44.3° N, 141.7° E: paleocoordinates 44.5° N, 141.2° E)
• coordinate estimated from map
When: Embetsu Formation, Zanclean (5.3 - 3.6 Ma)
Environment/lithology: marine; mudstone and fine-grained sandstone
• hard shale and massive mudstonen to fine sandstone
Size classes: macrofossils, mesofossils
Preservation: original phosphate
Collection methods: surface (float), chemical,
Primary reference: H. Ichishima and M. Kimura. 2005. Harborophocoena toyoshimai, a anew early Pliocene porpoise (Cetacea, Phocoenidae) from Hokkaido, Japan. Journal of Vertebrate Paleontology 25(3):655-664 [M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 55643: authorized by Mark Uhen, entered by Mark Uhen on 02.11.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| unclassified |
| - |
|
| Bacillariophyceae |
| Fragilariales - Fragilariaceae |
|
| Thalassionematales - Thalassionemataceae |
|
| Naviculales - Naviculaceae |
|
| Rhaphoneidales - Rhaphoneidaceae |
|
| Cymatosirales - Cymatosiraceae |
|
| Achnanthales - Cocconeidaceae |
|
| Rhizosoleniales - Rhizosoleniaceae |
|
| Bacillariales - Bacillariaceae |
|
| Melosirales - Melosiraceae |
|
| Melosirales - Hyalodiscaceae |
|
| Melosirales - Stephanopyxidaceae |
|
| - Hemidiscaceae |
|
| Thalassiosirales - Thalassiosiraceae |
Bacterosira fragilis, Thalassiosira antiqua, Thalassiosira eccentrica, Thalassiosira jacksonii, Thalassiosira cf. jacksonii, Thalassiosira jouseae, Thalassiosira manifesta, Thalassiosira marujamica, Thalassiosira nidulus, Thalassiosira oestrupii, Thalassiosira cf. oestrupii, Thalassiosira sp.
|
| Paraliales - Paraliaceae |
|
| Paraliales - Pseudopodosiraceae |
|
| Coscinodiscales - Heliopeltaceae |
|
| Centrales - |
|
| Cosmiodiscus |
| - |
|
| Pisces |
| - |
|
| Mammalia |
| Cetacea - |
|
| Cetacea - Balaenopteridae |
|
| Cetacea - Monodontidae |
|
| Cetacea - Phocoenidae |
|
| Cetacea - Delphinidae |
|