Also known as Sittako, Matsumoto

Where: Nagano, Japan (36.3° N, 138.0° E: paleocoordinates 39.0° N, 135.4° E)

• coordinate stated in text

When: Bessho Member (Aoki Formation), Langhian to Langhian (16.0 - 11.6 Ma)

• Bessho Bed, originally reported to be Langhian; Middle Miocene, ca 14 Ma

•Langhian to Serravallian according to Kohno et al. 2007

Environment/lithology: coastal; shale

Size class: macrofossils

Preservation: original phosphate

Primary reference: T. Nagao. 1941. An occurrence of a fossil sea lion in the Miocene deposits of Sinano, Japan. Journal of the Faculty of Science, Hokkaido Imperial University. Series 4, Geology and Mineralogy 6(2):75-84 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 59179: authorized by Mark Uhen, entered by Mark Uhen on 20.03.2006

Creative Commons license: CC BY (attribution)