Also known as Aoki, Koizumi

Where: Ueda, Japan (39.6° N, 140.1° E: paleocoordinates 42.6° N, 137.4° E)

• coordinate estimated from map

When: Bessho Formation, Langhian (16.0 - 13.8 Ma)

Environment/lithology: marine; shale

Size class: macrofossils

Primary reference: J. Makiyama. 1936. Sinanodelphis izumidaenis, a new Miocene dolphin of Japan. Memoirs of the College of Science, Kyoto Imperial University, Series B 11(2):115-134 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52068: authorized by Mark Uhen, entered by Mark Uhen on 18.07.2005

Creative Commons license: CC BY (attribution)