Ashoro (Oligocene of Japan)

Where: Hokkaido, Japan (43.2° N, 143.5° E: paleocoordinates 44.5° N, 141.2° E)

• coordinate estimated from map

When: upper tuffaceous siltstone Member (Morawan Formation), Chattian (28.1 - 23.0 Ma)

• late Oligocene

Environment/lithology: shoreface; tuffaceous siltstone

• basinal (siliceous), near shore

Size class: macrofossils

Primary reference: T. Ando and C. -H. Tsai. 2014. Large aetiocetid implies a wide ranges of inch in early Mysticeti. Society of Vertebrate Paleontology Program and Abstracts 79 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 162501: authorized by Mark Uhen, entered by Mark Uhen on 26.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cetacea - Aetiocetidae
Morawanocetinae indet. Barnes et al. 1995 whale
AMP 9