Homare 2 District (Miocene of Japan)

Also known as Teshio River

Where: Hokkaido, Japan (44.8° N, 142.0° E: paleocoordinates 45.2° N, 140.7° E)

• coordinate stated in text

When: Wakkanai Formation, Tortonian (11.6 - 7.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; mudstone

• siliceous turbidite mudstone; andesitic tuffaceous breccia and tuffaceous sandstone, which contain opaque hornblende, occur in basal sec- tions of the formation

Size class: macrofossils

Primary reference: M. Murakami, C. Shimada, Y. Hikida and H. Hirano. 2012. A new basal porpoise, Pterophocaena nishinoi (Cetacea, Odontoceti, Delphinoidea), from the Upper Miocene of Japan and its phylogenetic relationships. Journal of Vertebrate Paleontology 32(5):1157-1171 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 133430: authorized by Mark Uhen, entered by Mark Uhen on 13.09.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Cetacea - Phocoenidae
Phocoenidae indet., Pterophocaena nishinoi n. gen. n. sp.
Phocoenidae indet. Gray 1825 porpoise
Pterophocaena nishinoi n. gen. n. sp. Murakami et al. 2012 porpoise