Mandano (Pleistocene of Japan)

Also known as Ichihara

Where: Chiba, Japan (35.3° N, 140.1° E: paleocoordinates 35.3° N, 140.2° E)

• coordinate estimated from map

When: Mandano Formation (Kazusa Group), Middle Pleistocene (0.8 - 0.1 Ma)

• early middle Pleistocene, approximately 0.5 Ma

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; sandstone

• sand and gravel

Size class: macrofossils

Preservation: original phosphate

Primary reference: H. Furusawa and N. Kohno. 1994. Steller's sea-cow (Sirenia: Hydrodamalis gigas) from the Middle Pleistocene Mandano Formation of the Boso Peninsula, Central Japan. Fossils 56:26-32 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 65240: authorized by Mark Uhen, entered by Mark Uhen on 20.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Sirenia - Dugongidae
Hydrodamalis gigas
Hydrodamalis gigas Zimmermann 1780 Steller's sea cow
 Carnivora - Otariidae
Eumetopias sp.1
Eumetopias sp.1 Gill 1866 Steller sea lion
 Carnivora - Odobenidae
Odobenus mandanoensis n. sp.2
Odobenus mandanoensis n. sp.2 Tomida 1989 walrus
1Mandano Fossil Research Group 1987; 2Tomida 1989