Where: Fukui, Japan (36.2° N, 136.8° E: paleocoordinates 44.0° N, 141.0° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Kaizara Formation (Tetori Group), Callovian (166.1 - 163.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; sandy shale

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 39900: authorized by Martin Aberhan, entered by Sabine Nürnberg on 12.06.2004

Creative Commons license: CC BY (attribution)