Where: Ishikari, Japan (43.1° N, 142.0° E: paleocoordinates 51.2° N, 134.7° E)
• coordinate estimated from map
• local area-level geographic resolution
When: Mikasa Sandstone Formation (Middle Yezo Group), Turonian (93.9 - 89.8 Ma)
• formation-level stratigraphic resolution
Environment/lithology: foreshore; fine-grained sandstone and mudstone
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 40218: authorized by Martin Aberhan, entered by Sabine Nürnberg on 20.06.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Eriphyla (? Eriphyla) sp. Gabb 1864 clam | |
Meekia hokkaidoana clam | |
Cymbophora ezoensis clam | |
Aphrodina pseudoplana venus clam |