Where: Fukushima, Japan (37.8° N, 140.9° E: paleocoordinates 45.3° N, 144.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Nakanosawa Formation (Soma Group), Kimmeridgian (157.3 - 152.1 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; calcareous sandstone and limestone

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 40546: authorized by Martin Aberhan, entered by Sabine Nürnberg on 25.06.2004

Creative Commons license: CC BY (attribution)