Where: Hokkaido, Japan (43.3° N, 143.8° E: paleocoordinates 44.6° N, 141.4° E)

• coordinate estimated from map

When: Middle Hard Shale Member (Morawan Formation), Chattian (28.1 - 23.0 Ma)

Environment/lithology: basinal (siliceous); lithified shale

Size class: macrofossils

Preservation: original phosphate

Collection methods: surface (float),

Primary reference: L. G. Barnes, M. Kimura, H. Furusawa and H. Sawamura. 1995. Classification and distribution of Oligocene Aetiocetidae (Mammalia; Cetacea; Mysticeti) from western North America and Japan. The Island Arc 3(4):392-431 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45787: authorized by Mark Uhen, entered by Mark Uhen on 01.12.2004

Creative Commons license: CC BY (attribution)