Where: Tokyo, Japan (35.8° N, 139.2° E: paleocoordinates 45.3° N, 136.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Kochigatani Group, Norian (228.0 - 208.5 Ma)

• Upper part of Kochigatani Group

• formation-level stratigraphic resolution

Environment/lithology: marine; sandstone

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 40307: authorized by Martin Aberhan, entered by Sabine Nürnberg on 22.06.2004

Creative Commons license: CC BY (attribution)