Where: Okayama, Japan (35.1° N, 133.6° E: paleocoordinates 44.5° N, 140.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Yamaoku Formation, Toarcian (182.7 - 174.1 Ma)

• Toarcian (or thereabout)

• formation-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40615: authorized by Martin Aberhan, entered by Sabine Nürnberg on 26.06.2004

Creative Commons license: CC BY (attribution)